Tag Archives: I-80

State Transportation Commission tours UDOT projects in Summit County

PARK CITY — On Thursday, June 25,  the State Transportation Commission toured several areas in Summit County to see current and recent roadway improvement projects in the county.

The Utah Department of Transportation (UDOT) has been working with Summit County, Park City, and Snyderville Basin Parks, Trails and Recreation on improving transportation routes in the area.

“Summit County is a popular destination for recreation enthusiasts year-round,”  says UDOT Region Two Director Nathan Lee.  “Keeping the flow of motorists, cyclists, and wildlife moving through the county efficiently and safely is a top priority for us.”

The commission takes a tour of the recreation/wildlife underpass at US-40 in the Snyderville Basin.

The commission takes a tour of the recreation/wildlife underpass at US-40 in the Snyderville Basin.

In the past five years, UDOT has invested $102 million in roadway improvements in Summit County.  Some of those projects include:

-I-80 from Kimball Junction to SR 224 Study

This study looked at different scenarios to expand the capacity of SR 224 near Kimball Junction to accommodate future traffic and improve mobility.  Three recommendations were made, including a 7-lane section on SR 224, a continuous flow intersection at Olympic Parkway/Newpark Blvd., and a third left turn lane from northbound SR 224 to westbound I-80.  A final recommendation has not been chosen and funding for construction has not been secured.

-Wildlife Underpass Crossing at US 40

Completed in November 2014, this new underpass crossing provides recreational access and connectivity west of US 40 with the Frontage Road east of US 40.  The underpass also enhances safety for drivers and trail users, while at the same time reducing auto-wildlife crashes.

-SR 224 between Richardson Flat and Round Valley Drive

UDOT repaved and widened S.R. 248 to five lanes (two general purpose lanes in each direction with a two-way left turn lane) from Richardson Flat Road to Round Valley Drive. The project also included the installation of bike lanes from Wyatt Earp Way to Richardson Flat Road and intersection improvements at Richardson Flat Road and S.R. 248.  This project was completed in 2013.

The Commission stopped at S.R. 248, east of Comstock Drive to view a pedestrian tunnel near Treasure Mountain Middle School in Park City.

The Commission stopped at S.R. 248, east of Comstock Drive, to view a pedestrian tunnel near Treasure Mountain Middle School in Park City.

-SR 224 between Bear Hollow and I-80

UDOT completed a three-inch repaving on S.R. 224 from Bear Hollow to the I-80 interchange in July 2014.  The project also included new radar signal detection, pedestrian ramp upgrades and a shared shoulder for Park City Transit buses/ bikes on the east side.

Current projects under construction include the following:

-I-80 between Silver Creek and Wanship

This $43 million project replaces asphalt, upgrades drainage systems, and installs overhead variable message signs (VMS) to better communicate road conditions on Interstate 80 between Silver Creek and Wanship.  Construction began in December 2014 and is scheduled for completion in late 2015.

i-80 Bridge Demolition near Wanship We shared with you earlier about the construction going on near Wanship on I-80. Now, we’ve got a video to show how we teamed with Geneva Rock Products to take down the bridge.

Posted by Utah DOT on Wednesday, May 6, 2015


-Judd & Hobson Lane Bridges at I-80

This $2.7 million renovation project prolongs the life of the both the Judd and Hobson Lane bridges along Interstate 80 between Coalville and Hoytsville.  Originally built in 1967, the bridges provide connectivity and enhance safety for drivers.  Renovations began in June 2015 and are scheduled for completion in the fall of 2015.

Upcoming projects in Summit County include the following:

-New westbound truck lane on Interstate 80 between Parley’s Summit and Jeremy Ranch

To improve mobility and enhance safety on Interstate 80, UDOT is designing a passing truck lane between Parley’s Summit and Jeremy Ranch.  The $17 million design project will begin in 2017.

-US 40 bridges near Jordanelle Reservoir

This $4.2 million project will preserve seven bridges near the Jordanelle Reservoir, which are frequently used by motorists visiting the area for recreation.  The bridges were originally built over 20 years ago. Bridge preservation work begins in 2016.

For a complete list of current and future projects in Summit County, visit the UDOT Projects page.

This guest post was written by Region Two Communications Manager Agustin Avalos. 

Plan ahead for delays on the July 4 weekend

UDOT engineers advise avoiding travel during heavy traffic times; construction to be suspended on most highway projects

 SALT LAKE CITY – The Utah Department of Transportation (UDOT) advises drivers to plan ahead for travel delays this July 4 weekend by avoiding heavy traffic times if possible. Although work will be suspended and lanes will be open on most Utah highways, existing restrictions will remain in place to protect the work zone and ensure safety on several major projects in Salt Lake, Davis, Utah, and Summit counties.

UDOT traffic engineers anticipate heaviest traffic this weekend on Thursday, July 2, between noon and 7 p.m., with highest overall traffic volumes expected around 3 p.m. A second period of high traffic is also expected from Saturday, July 4, at 10:30 p.m. to Sunday, July 5, at 12:30 a.m.

To help accommodate high traffic levels, UDOT will be adjusting the timing of traffic signals and ramp meters. UDOT is also partnering with Orem and Provo, as well as Brigham Young University, to help manage traffic to and from the Stadium of Fire event. Motorists attending the Stadium of Fire are encouraged to avoid construction on Orem Center Street, and use 800 North or University Parkway as an alternate.

Road construction projects that drivers should be aware of when planning their trips this weekend include:

I-15 at the Point of the Mountain
All four lanes are open in both directions on I-15. However, the northbound lanes have been split into two sections between S.R. 92 and 14600 South. Drivers wanting to exit at 14600 South need to stay to the right through the lane split. Due to narrowed and shifting lanes throughout the construction zone, the speed limit has been reduced to 55 miles per hour.

I-80 in Summit County
I-80 is reduced to one lane in each direction from the U.S. 40 interchange to Wanship in Summit County. All traffic has been shifted to the eastbound lanes, and the speed limit is reduced to 45 miles per hour. In addition, the westbound on- and off-ramps at Exit 150 (Tollgate/Promontory) are closed. To reduce delays, drivers should consider using I-84 through Ogden as an alternate route. These restrictions are scheduled to remain in place through fall 2015 while crews reconstruct the freeway with concrete pavement.

Drivers should remember to stay alert, use caution, and obey posted speed limits when traveling through construction zones in order to ensure safety.

Construction schedules are weather dependent and subject to change. For more information about these and other UDOT projects, visit udottraffic.utah.gov or download the UDOT Traffic app, available for iOS or Android devices.

UDOT informs Utah Transportation Commission of intent to raise speed limits in certain areas of I-80, I-70 and I-84

BRIGHAM CITY — The Utah Department of Transportation (UDOT) informed the Utah Transportation Commission of its decision to raise the speed limits on certain areas of rural Utah interstates today during the monthly Utah Transportation Commission Meeting, held in Brigham City Council chambers.

Traffic and Safety Director Robert Miles told the commission that the division has completed an analysis on speed, crash and fatal crash data.  The studies were conducted this spring, and determined that raising the speed limits in these areas would be safe and appropriate.

UDOT will increase the speed limit on stretches of Interstate 80 from 75 miles per hour to 80 mph from the I-84 Junction to the Wyoming border (MP 167.45 to 196.68).

A map of proposed changes for Interstate 80 speed limits

A map of proposed changes for Interstate 80 speed limits

Interstate 70 also has four sections of highway that will increase from 75 mph to 80 mph:

  • The I-15/I-70 Junction to just past Cove Fort (MP 5),
  • Just west of the US-89 Junction to Exit 63- Gooseberry Rd. (MP 21-63)
  • Exit 73 – Ranch Exit to Exit 138 – Brake Test Area (MP 73.9-138.7)
  • Exit 146 – Reef View Area to the Colorado border (MP 146-231).


A map of proposed speed limit changes for Interstate 70.

A map of proposed speed limit changes for Interstate 70.


On Interstate 84, three stretches of road will increase from 65-70 mph to 70 or 75 MPH:

  • I-15 to the mouth of the Canyon (MP 81-88) 70 mph
  • Between Ogden and Morgan (MP 92-106) 75 mph
  • Near Henifer to the I-80/84 Junction 75 mph
A map of proposed speed limit changes on Interstate 84.

A map of proposed speed limit changes on Interstate 84.


Major Delays Expected on I-15 this Weekend in Davis, Utah Counties

SALT LAKE CITY — The Utah Department of Transportation (UDOT) advises drivers to plan ahead for significant traffic restrictions on I-15 in Davis and Utah counties beginning as early as Saturday night. Crews will be demolishing a bridge at 400 North in Bountiful, and completing concrete pavement maintenance in Springville. Additional restrictions are also scheduled to begin on I-80 in Summit County as early as Saturday morning.

The following is a brief description of road construction projects that drivers should be aware of this weekend (all schedules subject to change due to weather or equipment issues):

I-15 in Davis County

I-15 is scheduled to close in both directions on Saturday, April 18, as early as 11 p.m. while crews demolish a bridge at 400 North in Bountiful. The freeway will be closed at the following locations:

  • Southbound I-15 will be closed between the Legacy Parkway/Park Lane interchange in Farmington and 400 North in Bountiful, and all southbound traffic will be diverted to Legacy Parkway. The southbound I-15 on-ramps at all interchanges in this area will also be closed.
  • Northbound I-15 will be closed at 400 North (Exit 317) in Bountiful. Northbound traffic will be diverted onto 400 North, then back onto the freeway via 500 West.

The freeway is scheduled to reopen by Sunday, April 19, at 11 a.m. Drivers in both directions are advised to use Legacy Parkway as an alternate route.

View Alternate routes for this weekend, as Interstate 15 will be closed from Farmington to Bountiful.

View Alternate routes for this weekend, as Interstate 15 will be closed from Farmington to Bountiful.

I-15 in Utah County

Southbound I-15 is scheduled to be reduced to one lane between 1400 North (Exit 261) and 400 South (Exit 260) in Springville on Saturday, April 18, as early as 9 p.m. for concrete pavement maintenance. These restrictions are scheduled to remain in place through Monday, April 20, at 7 a.m., when an additional lane will reopen.

During this time, drivers should plan ahead for severe traffic delays of more than an hour on Sunday, April 19, between 10 a.m. and 10 p.m. US-89 through Provo and Springville should be considered as an alternate route. In addition, UDOT recommends that drivers adjust their schedules to avoid travel on southbound I-15 during this time if possible.

Following these lane restrictions, the southbound lanes on I-15 in this area are scheduled to be split into two sections on Monday, April 20, as early as 12 p.m. This lane split is expected to remain in place through Thursday, April 23, at 5 a.m. to allow concrete pavement to cure. Drivers wanting to use exits 261 (1400 North) or 260 (400 South) in Springville will need to stay in the right lanes.

This work is being completed under warranty as part of the I-15 CORE project at no additional cost to taxpayers.

View alternate routes from Provo to Springville, as Interstate 15 will be closed for much of the weekend.

View alternate routes from Provo to Springville, as Interstate 15 will be closed for much of the weekend.

I-15 in Salt Lake County

Southbound I-15 is scheduled to be reduced to four lanes north of the 10600 South interchange beginning as early as Saturday, April 18, at 10 p.m. These restrictions are scheduled to remain in place through Sunday, April 19, at noon while crews complete concrete maintenance. This work is being completed at night to minimize traffic delays.

I-80 in Summit County

I-80 is scheduled to be reduced to one lane in each direction from the U.S. 40 interchange to Wanship as early as Saturday morning, April 18. All traffic will be shifted to the eastbound lanes, and the speed limit will be reduced to 45 miles per hour. In addition, the westbound on- and off-ramps at Exit 150 (Tollgate/Promontory) will both be closed. These restrictions are scheduled to remain in place through fall 2015.

Crews are completing the second phase of a project to reconstruct I-80 in this area with new concrete pavement. Last year, work was completed in the eastbound lanes, and this season crews are reconstructing the westbound lanes.

Construction schedules are weather-dependent and subject to change. For more information about these and other UDOT projects, visit udottraffic.utah.gov or download the UDOT Traffic app, available for iOS or Android devices.


UDOT releases 2015 top 15 construction projects list

SALT LAKE CITY — The Utah Department of Transportation (UDOT) announced today its top 15 road construction projects for 2015.

More than 180 construction projects are scheduled statewide this year, and motorists will need to plan accordingly. This season, UDOT is adding new lanes to freeways and highways, and building new roads to keep Utah moving. Crews will continue to perform maintenance on the state’s roads and bridges to ensure they remain in good condition and last as long as possible.

With two of the top projects located on Interstate 15, UDOT recommends motorists along the Wasatch Front rethink how they commute to reduce delays by carpooling, using transit, adjusting work schedules to leave earlier or stay later, or telecommuting.

The following is a list of the top 15 projects statewide in 2015:

1. I-15 The Point (Project Value $252 million)
Construction starts March 2015; scheduled completion fall 2016

UDOT’s largest project will widen I-15 to six lanes in each direction between 12300 South in Draper and state Route 92 in Lehi. The project will also reconstruct the interchange at 14600 South. Four lanes in each direction will remain open during daytime hours, but motorists should plan for delays due to lane shifts and other activities.

2. I-15 South Davis (Project Value $126.9 million)
Under construction; scheduled completion fall 2015

Last year’s largest construction project is scheduled for completion this year. Crews continue work to add Express Lanes on I-15 from North Salt Lake to Farmington. Work is also underway to reconstruct interchanges at 2600 South and 500 South in Bountiful as well as bridges at 1500 South and 400 North. Drivers can expect lane shifts as well as nighttime lane restrictions and surface street closures during construction.


3. I-80, Silver Creek to Wanship (Project Value $43 million)
Construction resumes in April; scheduled completion fall 2015

Work will resume this spring to complete the reconstruction of eight miles of I-80 with new concrete pavement between US-40 and Wanship. In addition, two bridges over I-80 are scheduled to be reconstructed this summer. Long-term lane restrictions will last from April through the fall with a small number of overnight freeway closures to accommodate bridge work.

i-80 Silver Creek to Wanship

4. I-15 Beaver Climbing Lanes (Project Value $44 million)
Construction starts March 2015; scheduled completion November 2015

I-15 is being widened in two locations in central and southern Utah to add climbing lanes to enhance safety. Lane restrictions will be in place through much of the summer to allow crews to construct these new lanes. Motorists should plan ahead and allow extra travel time when traveling to and from St. George or Las Vegas.

Beaver Climbing lanes

5. SR-36 Reconstruction (Project Value $25.6 million)
Construction starts spring 2015; scheduled completion fall 2015

A 10-mile stretch of state Route 36 in Tooele County is being reconstructed with new pavement, curb/gutter/sidewalk, and drainage improvements. Construction is scheduled to begin as early as April, and will continue for several months. Drivers will need to watch for traffic shifts and various restrictions to accommodate the work.

SR 36 Tooele

6. I-15 Hill Field Road interchange and Thru-Turn Intersections (Project Value $28 million)
Construction starts spring 2015; scheduled completion fall 2016

The interchange at I-15 and Hill Field Road is being converted to a single-point urban interchange to improve traffic flow and reduce congestion in the area. This project will also construct new Thru-Turn Intersections on Hill Field Road on each side of I-15. Construction is scheduled to begin this spring and continue through 2016. Drivers should plan ahead for lane restrictions and traffic delays throughout construction.

7. Bangerter/Redwood Interchange (Project Value $42 million)
Under construction; scheduled completion July 2015

Crews are completing the new interchange at Bangerter Highway and Redwood Road. Temporary traffic patterns in the area will continue through the summer. When complete, the new freeway-style interchange will be similar to the one constructed at Bangerter Highway and 7800 South.


8. I-215, 300 East to Redwood Road (Project Value $14 million)
Construction starts July 2015; scheduled completion October 2015

This heavily-traveled section of I-215 is being reconstructed this year. Crews will be removing the top layer of asphalt and replacing it with new pavement, as well as installing drainage improvements. Motorists should plan for lane restrictions and moderate traffic delays.

9. US-40, SR-208 to Duchesne (Project Value $14.6 million)
Construction starts spring 2015; scheduled completion August 2015

UDOT will be removing the top layer of asphalt and repaving 18 miles of US-40 in Duchesne County. This project will prolong the life of the road and provide a smoother ride for drivers. Lane restrictions and minor traffic delays are possible through the summer.

US 40 Duchesne

10. SR-108, 2000 West in Roy/Ogden (Project Value $16.9 million)
Under construction; scheduled completion summer 2015 

A 4.5-mile section of state Route 108 in Davis and Weber counties is being widened and reconstructed. One lane in each direction will be added, as well as curb, gutter and sidewalk. Motorists should plan ahead for lane restrictions and temporary access restrictions at intersections.

SR 108 Weber County

11. Provo Westside Connector/Vineyard Connector (Project Value $21.1/$13.7 million)
Under construction; scheduled completion spring 2016

Two new arterial roads are being constructed to serve the fast-growing areas of Provo and Vineyard in Utah County. Construction has already begun on these roads, and motorists using nearby or connecting streets should watch for trucks and other equipment.



For more information on the Vineyard connector, please e-mail udotregion3@utah.gov or call our region hotline 801-830-9304.

12. U.S. 89/State Street, Sandy and Draper (Project Value $2.7 million)
Construction starts summer 2015; scheduled completion fall 2015

Two sections of State Street – from 8000 South to 9000 South, and from 11400 South to 11800 South – will be repaved this summer. Work will primarily take place during nighttime hours, and motorists should expect lane restrictions and business access restrictions during this time.

US 89 Sandy:Draper State Street

13. U.S. 89/Harrison Boulevard intersection (Project Value $6.3 million)
Construction starts May 2015; scheduled completion September 2015

UDOT will realign the intersection of US-89 with Harrison Boulevard to improve traffic flow and will install additional safety improvements in the area. U.S. -89 will also be widened near the intersection. Occasional lane closures will be necessary to complete the work, and motorists should expect additional congestion due to construction.

14. SR-7, Warner Valley to Washington Dam Road (Project Value $21 million)
Under construction; scheduled completion December 2015

Construction continues to extend state Route 7 (Southern Parkway) near the St. George Airport. This extension of the new highway will help improve travel between the new airport and area recreation sites including Zion National Park and Sand Hollow Reservoir.

Southern Parkway

15. Antelope Drive, 2200 West to University Park Boulevard (Project Value $8 million)
Under construction; scheduled completion May 2015

Antelope Drive is being widened near the I-15 interchange to improve traffic flow and enhance safety in the area. Additional turn lanes are being constructed near the entrance to Davis Hospital and Medical Center. Lane restrictions and occasional delays are expected, but two lanes in each direction will remain open on Antelope Drive at all times.


UDOT wants motorists to be in the know regarding construction projects and traffic delays. The following tools are available to provide information about projects and traffic conditions statewide:

UDOT Traffic App — The UDOT Traffic app delivers traffic info directly to motorists by incorporating the best and most up-to-date information from the UDOT Traffic Operations Center, including real-time traffic conditions, construction alerts, crash information and road weather conditions. The UDOT Traffic app is free and available for download in the Apple App Store and Android Market for tablets and smart phones.

Interactive UDOT Traffic Website — The website, http://udottraffic.utah.gov, features an interactive map identifying the locations of UDOT projects statewide. Additional information is provided for each project, including the construction schedule, expected travel delays and the project benefits. The public can also subscribe to an RSS feed on the site to receive real-time updates for the projects that affect them most.

UDOT social media — UDOT offers an official Twitter feed and Facebook page; UDOT Traffic and its four regions statewide also operate Twitter accounts. Motorists can find a list of these feeds at twitter.com/UtahDOT where they can receive regular updates on road construction and traffic conditions.

I-80 Crash Silver Barrel Awards

Executive Director Carlos Braceras awarded twelve Region Two employees with a Silver Barrel Award for their efforts related to a semi crash on I-80 that closed the road for several hours. Details of their efforts are below and the recipients included:

  • Shane Bushell
  • Rick Debban
  • Nick Jarrett
  • Robert Miles
  • Cody Moore
  • Stuart Ovard
  • Rick Potter
  • Bryant Richins
  • Jason Richins
  • Layne Thornton
  • Dottie Weese
  • Ron Williams

On July 16, 2014, Summit County Dispatch called Bryant Richins the Echo Station Supervisor around 5 a.m. and asked him to respond to a semi crash on I-80 westbound in Echo Canyon.

Due to the severity of this crash and with both semis on fire, I-80 was closed in both directions.

Bryant and his crew provided the traffic control and set up a left lane closure from the Echo Port of entry to the maintenance turnaround at milepost 183. This provided emergency vehicles a way to travel westbound if they needed to get past the crash scene.

I-80 eastbound was opened to one lane of traffic around 8 a.m. The crew was then asked for material to contain the water and hazardous runoff from fighting the fire. Two trucks from the Wanship Station hauled material up and contained the runoff.

The crew then started to assist in the clean up of the crash but the fireman in charge was concerned with the possibility of the loads flaring up. They discussed several possibilities and it was decided the UDOT crew would tip the loads over with their loader so they could get water on it to better extinguish the smoldering fire. This alone was estimated to save a couple of hours in the clean up of the accident.

The UDOT Echo Crew then worked with the tow company and firemen and offered to use their four UDOT ten wheel dump trucks and loader to haul the debris to the landfill. The Summit County Fire Department tried to cut up the burnt semis with their chop saws but it was taking too much time. Bryant offered to have his equipment operator go in with the loader and smash and roll up the debris and then load it in to UDOT’s ten wheelers. This saved an estimated four hours. Bryant then proposed his plan with the UDOT Area Supervisor and called Morgan Asphalt around 9 a.m. to notify them he would need their services in Echo Canyon to rotomill and repave the damaged/burnt asphalt. The crash debris was cleaned up and Morgan Asphalt was able to start rotomilling and paving around 2 p.m. The interstate was repaved and all lanes open to traffic by 5:45 p.m.

This is a great example of successful partnering with Utah Highway Patrol, Summit County Law Enforcement, Summit County Fire Department, Summit County Health Department, Moores Towing, the UDOT Incident Management Team, the UDOT Region Safety Manager, the UDOT Area Supervisor, UDOT Wanship Station 236, and UDOT Echo Station 238! Due to this successful partnering they were able to safely reopen Interstate I-80 and estimated 6 hours early.

This guest post was taken from the Silver Barrel nomination written by Todd Richins, UDOT Region Two East Area Supervisor.

Dan Betts Silver Barrel

Dan Betts received a Silver Barrel Award for his solution to striping problems on I-80 in Parley’s Canyon. After receiving several complaints about low striping visibility Dan and UDOT Central Maintenance determined there was a problem. Dan contacted the manufacturer because the striping was still under warranty and came up with a great solution.

  • The manufacturer would replace the striping tape on I-80 between Mt. Aires Exit 132 and Lambs Canyon Exit 137, including installation and traffic control.
  • The upper section of I-80 from Lambs Canyon Exit 137 to Kimball Junction Exit 145 paint would be applied over the existing striping tape since the pavement is in need of treatment and tape would not be cost effective. The manufacturer would install the paint including the traffic control.
  • UDOT Region Two would provide the grooves for the striping tape to be applied.
  • The manufacturer would provide an additional four year warranty for the entire section, both taped and painted.

Through Dan’s efforts and negotiating skills he was able to improve striping on I-80 through Parley’s Canyon.

This guest post was taken from the Silver Barrel Nomination submitted to the UDOT Administration Office.

Urban speed limits raised to Keep Utah Moving

SALT LAKE CITY — Utah Department of Transportation crews canvassed the urban interstate across the Wasatch Front, replacing speed limit signs while officially changing the speed limit from 65 to 70 mph.

A new 70 mph speed limit sign waits to be installed.

A new 70 mph speed limit sign waits to be installed.

In an effort to optimize mobility and Keep Utah Moving, crews from UDOT Regions One, Two and Three spent all day on December 8th, changing out 99 signs from Spanish Fork to Ogden. In many instances, the crews simply placed a decal on the existing sign, but several of the older signs were replaced outright.

The speed limit increased on Interstates 15, 80 and 215. However, two sections of I-80 will remain at 65 mph, as engineering studies show the terrain doesn’t allow for a speed increase.

The choice to implement the new speed limits was based on several studies, and in response to last year’s legislation (H.B. 80).

Utah is not the first state to raise speed limits to 70 mph or faster. Nearly one-third of the United States has speed limits set at 70 mph or faster in urban areas, and more than two-thirds of states have increased them in rural areas.

UDOT workers change out speed limit signs on I-80 westbound

UDOT workers change out speed limit signs on I-80 westbound


Automated Queue Warning Detection System in the Work Zone

Prepare to Stop VMSThis summer, Region Two began work on Redwood Road from I-80 to North Temple to rotomill and resurface the roadway with a thin bonded PCCP 6” overlay. One of the biggest challenges on the job was maintaining traffic through the work zone while also maintaining side-street and business access. This issue was complicated by the high number of large trucks in the area. These trucks not only utilize a significant amount of available queue space on the ramps, they also take more time to climb the incline at the interchange before clearing the signal. These factors required significant coordination to keep traffic moving.

Our contractor, Dry Creek Structures, and construction crew worked closely with the Traffic Signal Maintenance group to split phase signals and move detection zones to accommodate traffic through the work zone. We also worked closely with Grant Farnsworth at the TOC Traffic Signals Desk to adjust signal timing as the work zone configuration changed.

From a traffic safety perspective, our top priority was to minimize queuing on the
westbound I-80 ramp and prevent stopped traffic on mainline I-80. Despite the team’s best efforts, traffic was occasionally still backing onto mainline I-80 while waiting to exit at Redwood Road. To help address this queuing problem, working with Marge Rasmussen in Region Two Traffic and Safety, and Project Manager Peter
Tang, an Automated Queue Warning Detection System was change ordered into
the project and installed on the I-80 westbound off-ramp to Redwood Road.
With this system, the occupancy rate was monitored near the gore point of the off-ramp. When the system detected stopped cars at this location, a warning message was activated at a Variable Message Sign (VMS) upstream of the off-ramp alerting motorists of “STOPPED TRAFFIC AHEAD” and “PREPARE TO STOP.”

How it works: A sub-contracted vendor (Ver-Mac) installed a radar sensor, cellular
modem and solar panel on a highway lighting pole near the bottom of the off
ramp. They also placed a VMS equipped with a cellular modem upstream of the off
ramp. When the vendor’s software system (Jam-Logic) detected an occupancy rate greater than 10 percent at this location, a message was activated at the VMS alerting travelers to the stopped condition ahead. Once the queued traffic had dissipated, the VMS message was automatically turned off and remained off until ramp queuing was detected again.

In addition to the VMS message activating when a queue was detected, email messages were also sent to the TOC Operators, the Signal Timing Engineer and the Resident Engineer, alerting them to the situation. When possible, adjustments were made to the signal timing to help clear the ramp traffic.

Results: The project team is not aware of any accidents at this location after the automated queue warning system was installed. Typically, the system was activated 10 times each day throughout the week or an average of 13.4 times on weekdays. Even during low traffic volumes, just a few long trucks on the ramp can back up traffic and activate the system. While the system was live, the queue warning messages were displayed 256 times for a total of 2,327 minutes. The average display time was 9 minutes. The maximum display time was 56 minutes (on August 23 starting at 9:19 a.m.).

Logical Automation Rules Chart“Doing advanced queue warning is a great operational benefit, but what the TOC appreciated most was the communication between the project and the control room. When the control room knows what’s going on, we’ll help out in any way that we can. In this case, we monitored the queue system and helped ensure that it was functioning as advertised – which it was,” explained Glenn Blackwelder, Traffic Operations Engineer.

Future Applications: The automated queue warning detection system was a valuable addition to our “tool box” for managing traffic issues in the construction work zone on the Redwood Road project. In the future, perhaps other projects could benefit from this or other types of technology to help address traffic control issues within construction work zones.

This guest post was written by Bryan Chamberlain, Region Two Resident Engineer, and was originally published in the Region Two Fall 2014 Newsletter.

I-80 Silver Creek Reconstruction

Photo of concrete pavingDrivers traveling through Summit County on I-80 have become familiar with one of the Region’s largest construction projects: the concrete reconstruction of I-80 from the U.S. 40 junction (MP 148) to Wanship (MP 155). Work began in June and is scheduled to continue through November of 2015 (construction will be halted during the winter months between 2014 and 2015).

The project includes replacing the freeway’s asphalt with new concrete pavement. In many locations, the existing asphalt will be removed and the pavement will be completely reconstructed. The new concrete will help accommodate the heavy trucks that travel in both directions along this key freight corridor and will prolong the life of the roadway.

UDOT’s contractor, Geneva Rock, is constructing the road in two principal phases. Phase one – the current phase – has shifted all traffic to the westbound lanes, allowing crews to reconstruct the eastbound lanes. In November, once the eastbound lanes are complete, lane restrictions will be lifted and traffic will be returned to its normal configuration. In the spring, crews will shift all traffic into the newly reconstructed eastbound lanes and complete work in the westbound lanes.

Photo of concrete pavingAs part of the concrete reconstruction, a unique pavement base material is being used to provide strength and stability to the pavement. The material, called Cement-Treated Asphalt Base (CTAB), provides a strong and stable base for the concrete to ensure durability and longevity. The CTAB material is formed by pulverizing the existing asphalt and adding cement powder and water to make a low strength concrete.

Typically, concrete pavement is either overlaid over the existing asphalt (as with the concrete paving project on S.R. 201), or a thin layer of asphalt is applied to the existing pavement and then the concrete is overlaid. On this section of I-80, however, the existing pavement is deteriorating too quickly to provide a suitable base. Instead of overlaying an additional layer of asphalt, CTAB was selected because of its lower cost and better resistance to water damage. While concrete treated bases have been used for a long time, this is the first instance in Utah where a cement treated base uses 100 percent recycled asphalt.

The project team has been involved in an extensive stakeholder outreach and public information program. Key stakeholders, such as Summit County, local emergency services, and the communities of Tollgate and Promontory, have been kept informed and consulted throughout the project to minimize impacts wherever possible and coordinate essential information such as emergency plans.

Photo of concrete pavingUDOT and Geneva Rock have worked together to address stakeholder concerns and mitigate risks associated with this traffic configuration. Local emergency crews are allowed to access the work zone in the event that they are not able to travel through open traffic lanes in a timely manner. Tow trucks are on-call at both ends of the construction zone to reduce response times to incidents and keep traffic moving.

Due to the long-term closure of Tollgate’s eastbound on- and off-ramps, accommodations needed to be made to provide residents access to their community, especially in case of emergency. The project team worked with the neighboring Promontory development to allow Tollgate residents to use of Promontory’s private access roads in order to bypass I-80 as they travel to and from Park City.

UDOT, Geneva Rock, and the local stakeholders have established a good working relationship for this significant reconstruction – a project that will ensure this section of I-80 stays in good repair for years to come.

This guest post was originally published in the Region Two Fall 2014 Newsletter.