Tag Archives: I-15

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

 

Nevada I-15 flooding required a multi-state response

A two-mile stretch of I-15 near milepost 91 in Nevada was washed away due to heavy rainfall that started on Monday, September 8th. In an unprecedented storm around 4 inches of rain fell in the space of 2 hours, flooding the road and washing away ground and asphalt leaving the interstate impassable. Record breaking numbers of rainfall were reported along streams in the area.

The Nevada DOT declared a state of emergency on Tuesday, September 9 due to the importance of passenger vehicle and commercial trucking flow on I-15. According to Arizona Department of Transportation, approximately 23,000 vehicles use I-15 each day between St. George, Utah and Las Vegas, Nevada.

Warnings on Utah’s freeway message boards were posted up and down I-15 letting drivers know that the freeway would be closed down and provided details for  alternate routes. These signs went as far east as Nebraska to provide enough time for travelers to change their routes.

Screen shot of tweet that says 'From nevadadot semi restriction lifted (except oversie w/o permit) on NV I-15Information was also available to drivers via the 511 phone line, the Utah Trucking Association, news outlets, Arizona and Nevada DOT’s, the UDOT Traffic website, the UDOT Traffic Twitter account and the UDOT Traffic app. UDOT’s social media channels proved very valuable during this event.

Travelers were directed to take S.R. 56 out of Cedar City to Nevada S.R. 319 and then to the U.S. 93 back to the freeway. UDOT and NDOT worked very hard to provide accurate and timely information to motorists traveling on this alternative.

State DOT’s had to work together. Although the closure was not in Utah UDOT was heavily involved in sending support to the affected areas. Due to increased traffic on S.R. 56 a UDOT Incident Management Team (IMT) was dispatched to assist. The IMT crews directed traffic, filled potholes and moved disabled semis out of traffic.

They also deployed a portable traffic camera trailer to the S.R. 18/S.R. 56 junction to monitor any potential problems and back-ups. UDOT’s Region 4 shared access to this camera with Nevada DOT. Region 4 was also able to respond quickly to a rockslide on the Arizona section of I-15 and sent snow plows to clear rock debris in the Virgin River Gorge area.

Southbound I-15 reopened to traffic on Friday, September 12th to one lane in each direction for passenger vehicles. Northbound lanes reopened on September 18.

Glenn Blackwelder a Traffic Operations Engineer at UDOT said “We could not have done it on our own. It took the communication and resources of the Traffic Operations Center, Region 4 and NDOT working together. We were pleased with how all agencies and divisions were able to work together to get I-15 back open as quickly as possible.”Screen shot of tweet and attached map showing detour route. The tweet reads "Reminder: Nevada I-15 closed due to flooding. So Cal and Vegas detour map:"

This guest post was written by Adam McMillan, Traffic Operations Center Intern.

I-15 Payson to Spanish Fork Project Wins Award

Photo of I-15 near Payson

This capacity project added a lane and shoulder in each direction

The I-15 Payson to Spanish Fork project was one of the largest construction projects in Region Three in 2013.

The ambitious $22 million, 6.5 mile design-build project recently received the “2014 Excellence in Concrete Award” in the category of Structures: Public Works for the concrete work on the bridges.

The project was fast-paced, with 7 months to widen 8 structures and extend pavement into the existing median for an extra lane and wider inside shoulder.

In addition to being widened, the existing bridge substructures were repaired to increase service life. The project also included constructing two miles of precast concrete post and panel noise walls on the east side of I-15 through Payson.

The I-15 Payson to Spanish Fork project improved a vital connection between the north and south half of the state for both commuters and the movement of goods and services. The rapid pace of the project and public coordination created little impact or inconvenience to the traveling public.

2014 Top 10 Construction Projects

The Utah Department of Transportation’s 2014 construction season will start soon. With more than 175 projects worth more than $800 million, UDOT is in for a busy summer.

A few large-scale expansion projects will help optimize mobility by adding new lanes and roads to accommodate Utah’s growing population. In addition, many preventive maintenance projects will help preserve the state’s infrastructure – keeping roads and bridges in good condition, and avoiding the need for more costly repairs in the future. The department will also continue to use innovative technology to improve traffic flow with the installation of the sixth and seventh diverging diamond interchanges in the state.

The following is a list of the top 10 projects statewide in 2014:

  1. I-15, South Davis County 
    UDOT will extend the longest continuous Express Lanes in the country with the reconstruction of I-15 in Davis County this summer. This project also includes the replacement of multiple bridges from North Salt Lake to Farmington in addition to new interchange configurations at 2600 South and 500 South, which will help improve traffic in those areas. A new pedestrian bridge at Parrish Lane and sidewalk improvements on 500 North and 500 South are also included in the project. Construction is scheduled to start in mid-April and is expected to be complete in 2015. Budget: $117 million
  2. S.R. 201 Reconstruction, Salt Lake County
    Crews will be placing new concrete pavement on S.R. 201 between 5600 West and 9450 West, and widening ramps at the 5600 West interchange. As part of this project, utilities, street signs, and traffic signals will also be upgraded. Work is scheduled start in late April and is expected to be complete in fall 2014. These improvements will prolong the life of the road and reduce congestion in the area. Budget: $20 million
  3. Bangerter Highway/Redwood Road interchange, Salt Lake County 
    UDOT will construct a new interchange at the Redwood Road and Bangerter Highway intersection, similar to the interchange at 7800 South and Bangerter Highway. Construction will start this summer and last for approximately one year. The completed project will improve the flow of traffic in a rapidly growing area of Salt Lake County and enhance safety. Budget: $42 million
  4. I-15, South Cedar City DDI, Cedar City 
    Crews will reconfigure the I-15 interchange at Exit 57, on the south end of Cedar City, as a Diverging Diamond Interchange (DDI) to improve the flow of traffic for cars, bikes and pedestrians. It includes new ramp construction and modifications to Main Street and the frontage roads. This will be the sixth DDI in Utah. The project is underway and is expected to be complete in fall 2014. Budget: $10 million
  5. Riverdale Road Reconstruction, Roy
    UDOT is reconstructing Riverdale Road between the I-84 interchange and S.R. 126 in Roy to improve traffic flow and reduce delays in the area. The project will replace the existing asphalt with new concrete pavement, add a northbound off-ramp and a southbound on-ramp at I-15, and construct two new intersections as well as a new bridge over the freeway. Construction is underway and is scheduled for completion in late fall 2014. Budget: $24 million
  6. I-15, 1100 South DDI, Brigham City 
    UDOT is converting the existing 1100 South interchange on Interstate 15 in Brigham City to a DDI – the seventh in the state, and the first in northern Utah. This innovative interchange will improve the flow of traffic for drivers traveling to and from Logan on U.S. 91. The north half of the interchange is under construction and will be completed in summer 2014. Once the north half is complete, traffic will be switched to the new bridge, crews will demolish the existing bridge, and the south half of the interchange in scheduled to be constructed by fall 2014. Budget: $$10 million
  7. I-80, Parleys Resurfacing, Parleys Canyon
    UDOT is resurfacing Interstate 80 in Parleys Canyon from the mouth of the canyon (near Foothill Drive) to the Ranch exit (exit 132).This maintenance project will replace several areas of rough pavement throughout the canyon with new durable asphalt. Construction scheduled to start this summer and is expected to be complete in fall 2014. Budget: $4 million
  8. State Street Resurfacing, Salt Lake County
    UDOT will perform regular maintenance repaving State Street from 400 South to 3300 South, removing the top layer of pavement and replacing it with new asphalt. In addition, crews will reconstruct pedestrian ramps and median islands. Construction is scheduled to start in late April and is expected to be complete by summer 2014. This project will prolong the life of the pavement and provide a smoother ride for drivers. Budget: $4 million
  9. I-80, Silver Creek to Wanship, Summit County
    This project will reconstruct a seven-mile section of Interstate 80, one of the most heavily-traveled highways in Utah, using new concrete pavement to prolong the life of the roadway. Crews will also replace the westbound bridge over Silver Creek. Construction is expected to start in June and is scheduled to be complete in 2015. Budget: $43 million
  10. U.S. 40 improvements, Wasatch, Duchesne, Uintah Counties 
    UDOT crews will be working in several locations along U.S. 40: extending passing lanes near Daniels Summit and Vernal; repaving near Fort Duchesne and Jensen; and upgrading lighting in Roosevelt. These projects will enhance safety for drivers and help traffic flow more smoothly between the Wasatch Front and the Uintah Basin. Construction is underway and is scheduled to be complete by fall 2014. Budget: $13 million

Construction activities, dates and times are subject to change because of weather or delays. For the latest information, download the free “UDOT Traffic” app on any iPhone or Android device or visit udottraffic.utah.gov.

UDOT 2014 Top 10 Road Construction Guide (745KB PDF Download)

Silver Barrel Awards for Maintenance Station 225

Photo of crew members from maintenance station 2425 receiving their Silver Barrel AwardsExecutive Director Carlos Braceras presented several Silver Barrel Awards to employees from Maintenance Station 225 – Salt Lake Metro. The first award was presented to Station Supervisor Jake Brown for his exemplary service assisting a community group in their neighborhood clean up of the 600 North overpass.

On Saturday, Nov. 9, the Capitol Hill Neighborhood Council and the Rose Park Community Council co-sponsored a clean up of the 600 North overpass. Several community residents and almost thirty West High School JROTC students attended the event. Anticipating that most of the students would not have tools or gloves for the clean up, the Capitol Hill Neighborhood Council asked UDOT for a little help. In response, Jake supplied brooms, shovels, rakes, gloves, vests and garbage bags to the group. The group was thrilled with the support and readily put everything to good use.

Photo of Carlos Braceras presenting maintenance station 2425 with Silver Barrel AwardsJake’s willingness to support his community is a key reason why he is so deserving of the Silver Barrel Award. As Capitol Hill Neighborhood Council Chair Richard Starley wrote, “We could not have done it without Jake’s support. We appreciate his willingness to help and follow through on our requests. . . . The overpass and I-15 interchange haven’t looked this clean since they were built.”

Members of Jake’s crew, Fred Baney, Mike Gailey, Robert Giolas, Brian Goins and Curtis Trott, were also presented a Silver Barrel for assisting the Salt Lake City Fire Department with containment of a semi fire on the northbound I-15 ramp to westbound I-80.

On the morning of December 5, 2013 the maintenance station was contacted at 3:20 a.m. to provide assistance with the fire fighting efforts. Due to the cold temperatures crew members were concerned about ice and responded with a plow truck and sander, a loader and a liquid brine truck with a hose attachment. Salt Lake City fire trucks began to run low on water so Photo of Carlos Braceras congratulating and thanking maintenance station 2425 crew membersUDOT crew members used the brine truck to help douse the flames. The loader was used to expose the burning cargo allowing fire crews put out hot spots.

Once the fire was out Jake and his crew cleaned up the debris, assisted the tow company with removing the semi and its cargo, salted and removed ice patches and had the ramp open for the morning commute. Congratulations to these very deserving individuals.

Co-authored by Region 2 Communications Manager Adan Carrillo. Thanks also goes to Adan for providing the photos. 

2013 Construction Season Nears the End

The leaves have turned, the first snow has fallen on the mountains, and the 2013 construction season is nearing an end. UDOT and contractor crews have completed more than 200 road construction projects statewide in 2013. By the end of the year, 216 projects will have been carried out state roads and Interstates from Plymouth to St. George and from Wendover to Vernal. Each one of these projects was designed to help accomplish one or more of UDOT’s strategic goals:

    Photo of crews working along I-80 in Parleys Canyon

    Construction crews installing a new 66″ concrete pipe along I-80 in Parleys Canyon.

  • Preserve Infrastructure
  • Optimize Mobility
  • Zero Fatalities
  • Strengthen the Economy

In 2013, most construction projects fell under the goal to Preserve Infrastructure. These repaving and rehabilitation projects will keep Utah’s roads in good condition and prevent the need for more costly repairs in the future. Maintaining our highways helps them last as long as possible, and benefits the economy by keeping people, goods, and services moving throughout the state.

In 2012, UDOT completed 229 projects with a total value of $2,783,444,049, which included the I-15 CORE and Mountain View Corridor projects. By comparison, the total value of projects scheduled for completion in 2013 is $631,489,082. To make the best use of a much smaller budget during the 2013 construction season, the department focused on maintaining and making minor improvements to Utah’s roads, rather than major expansion or reconstruction efforts.

During the 2013 construction season, UDOT has resurfaced or repaired pavement on more than 400 miles of Utah highways and roads, and has completed 12 bridge repair or replacement projects. Some notable projects that have been completed or are scheduled for completion this year include:

    Photo of new bridge over I-15 at St. George Blvd during construction

    Workers constructing a new bridge over I-15 as part of the new DDI at St. George Boulevard.

  • I-80 Culvert Installation: Workers installed approximately two miles of 6-foot-diameter concrete pipe along I-80 in Parley’s Canyon to replace the original drainage system constructed in the 1960s.
  • I-15 Widening: Crews widened an 8-mile section of I-15 in southern Utah County from two lanes to three this year to reduce congestion and accommodate future growth in the area.
  • St. George Boulevard Diverging Diamond Interchange (DDI): Workers are converting the existing interchange at I-15 and St. George Boulevard into Utah’s fifth operating DDI to improve the flow of traffic.
  • U.S. 89/91 Repaving: Crews repaved U.S. 89/91 in Cache County from Sardine Summit to Wellsville.
  • U.S. 89 (State Street) Widening: Workers widened and repaved a two-mile section of State Street between Orem and Pleasant Grove.
  • Bangerter Highway Continuous Flow Intersection (CFI): Crews completed a new CFI at the intersection of Bangerter Highway and 13400 South to improve traffic flow in southwest Salt Lake County. Utah leads the nation with 11 CFIs (there are only 20 total in the nation).
  • I-215 Concrete Maintenance: Workers repaired concrete on I-215 from S.R. 201 to North Temple to extend the useful life of the pavement.

Moving forward in 2014, UDOT will widen I-15 at the Point of the Mountain and in Davis County, as well as continue its aggressive focus on maintaining existing roads.

This guest post was written by Leigh Gibson from the UDOT Traffic team. 

I-15 CORE Selected as National Top-Ten Project; Now Up to Public Vote

I-15 and University Parkway Aerial photo

University Parkway

In August I-15 CORE was picked as one of the top 10 finalists for the 2013 America’s Transportation Award sponsored by the American Association of State and Highway Transportation Officials (AASHTO), AAA and the U.S. Chamber of Commerce.

As a finalist, I-15 CORE is eligible for either the Grand Prize, which is awarded by a panel of judges, or the People’s Choice award, which is based on public voting. The winner receives a $10,000 donation for a local charity, and UDOT has selected United Way of Utah County for the donation. United Way of Utah County works to create lasting improvements in the community in the areas of education, income and health.

To vote, go to the following link, nominate.americastransportationawards.org/voting and select I-15 CORE.  Each person can vote up to 10 times a day through Oct. 2.

I-15 CORE was completed in December 2012 as the fastest billion-dollar highway project built in U.S. history. The project included the widening and reconstruction of 24 miles of I-15 from Lehi to Spanish Fork and was $260 million under budget.

United Way of Utah County seeks to help those most vulnerable in the community, focusing on three areas that are building blocks of a good life: education, income and health.

This is a guest post written by I-15 CORE communications team member Christina Davis.

Update: Thanks to everyone who voted. We didn’t win the people’s choice award but did win the Grand Prize and $10,000 for United Way of Utah County. Congratulations I-15 CORE team and United Way!

I-15 CORE Receives 2013 Partnered Project of the Year Award

IPI Award

I-15 CORE received the highest partnering award in its category (diamond level).

UDOT and its I-15 CORE partners, Provo River Constructors and partnering facilitator Tom Warne and Associates, were awarded the prestigious International Partnering Institute’s (IPI) John L. Martin Partnered Project of the Year – Diamond Level, at a ceremony in San Francisco, May 16.

“I-15 CORE demonstrated world-class partnering. The team focused on developing a collaborative project and program culture both within the project team and by integrating stakeholders throughout the entire process,” said Rob Reaugh, IPI Executive Director.

The ceremony was comprised of representatives from various state agencies and private companies from across the nation, and contractors, designers and architects and other firms associated with construction, partnering and facilitation.

“For UDOT, partnering is part of our culture and has been for years,” said Todd Jensen, I-15 CORE Project Director. “The partnering process enables decision makers from the Department and the contractor to come together to set common goals and expectations and to discuss openly any issues or challenges and how to overcome them.  It’s a collaborative process that can be difficult and time consuming.  Without a strong commitment to the partnering process, I believe UDOT would not be a national leader in the transportation industry that it is today.”

Springville Paving

Springville – To meet the aggressive construction schedule, crews paved during the summer and winter months. During the winter months, both I-15 CORE and PRC would meet daily to evaluate weather conditions and ensure each new pavement section would be properly protected, heated and monitored before paving could begin.

“In terms of project success, (I-15 CORE) was delivered $260 million under budget, 48 days early and processed more than 125 contract change orders without having a claim, and considering the number of man hours, was pretty successful from a safety standpoint,” Reaugh said.

According to Jensen, the project’s success was predicated on three keys: shared project goals, a commitment to continuous communication and a commitment to both following the formal partnering process and encouraging building relationships through informal partnering at all levels.

“With such a large project and PRC’s aggressive construction schedule, continuous communication was vital. We decided to co-locate the field offices as well as the main office to help foster face-to-face communications. Our priority was to encourage team members to talk with each other face-to-face first, followed by phone calls then email and finally letter,” Jensen said. “It was challenging and it placed people in uncomfortable situations at times, but the results of creating and encouraging a culture of communication speak for themselves.”

Provo RR Girder Placement

Provo – Crews set a steel bridge girder over the Union Pacific Railroad. Much of the construction was done at night to minimize travel delays.

During the initial partnering sessions, leadership from both teams established a shared set of goals of safety, quality, trust, truth and teamwork, budget and profitability, communication, upholding the public trust, schedule and enjoying the process. The leadership team then further defined what each goal meant. This helped keep members focused on what was most important. Like all projects, there were disagreements, differing interpretations of the contract documents, but these were overcome or managed by keeping the project goals at the forefront of employees minds and trying to address issues as quickly as possible.

“As part of our monthly partnering surveys, we required that names be attached to comments. Not to single anyone out but to know where challenges were, so that we could talk with our counterparts and work with that respective group to help get things resolved,” Jensen said.

American Fork 100 EAst

American Fork – Partnering was key in the decision to split the travel lanes on I-15 in Orem and American Fork. UDOT was able to keep lanes open and traffic moving while allowing PRC to finish building the middle sections of I-15.

Another key to success was the emphasis on informal partnering outside of the formal process.

“Relationships can make or break a project. We tried to foster a culture that it was okay to escalate items if the team couldn’t come to a resolution. We encouraged working groups to meet individually and get to know one another on a personal level. Challenges will happen but if you get to know the person across the table, it can help you get issues resolved quickly,” Jensen said.

According to Warne, accountability was the last key to building a successful project.  At each partnering meeting, the participants would discuss issues and develop action plans with responsible parties and timelines identified. In subsequent meetings, an accounting of progress for each action item had to be reported on.

“This team was particularly attentive to addressing the issues. Working together to solve problems and address issues strengthened the team and better prepared them for future challenges. Nothing short of an exceptional level of team work allowed them to deliver this project in record time,” Warne said.

Completed I-15

Pleasant Grove – Because both teams were committed to partnering and established shared project goals, I-15 CORE was completed ahead of schedule and under budget.

Because of the commitment to partnering, I-15 CORE never needed to use the assigned Dispute Resolution Board or the project sponsors to help resolve issues; all the project’s goals were met or exceeded; and a sense of achievement developed among project team members.

For more information about the International Partnering Institute visit: www.partneringinstitute.org.

This guest post was written by I-15 CORE team member Geoff Dupaix.

2013 Top 10 Construction Projects

UDOT Logo udot.utah.govWith summer fast approaching, we would like to share our top 10 road construction projects for 2013.

While there will not be as many large road projects in 2013, there will still be more than 150 construction projects statewide that will require drivers to plan ahead. This season, we will continue to perform maintenance on our roads and bridges to ensure they remain in good condition and last as long as possible.

We will also use innovative technology to improve traffic flow with the installation of the fifth and sixth diverging diamond interchanges (DDI) as well as the 11th continuous flow intersection (CFI) in the state.

The following is a list of the top 10 projects statewide in 2013:

 

  1. I-80 Drainage Pipe Replacement, Salt Lake County. Crews will install new drainage pipe in Parleys Canyon to replace the existing system. Drivers should expect lane closures throughout the summer. Project completion is estimated for December 2013.
  2. I-15, South Payson Interchange to Spanish Fork River. This summer, crews will work to widen seven miles of pavement and bridges on I-15 from the South Payson Interchange to the Spanish Fork River. Most of the work will take place in the freeway median, and construction is expected to be completed by the end of the year.
  3. Southern Parkway, St. George. The Southern Parkway is a 33-mile project that will eventually become an eastern belt route for Washington County. Currently, eight miles are complete from I-15 to the new St. George Airport. Construction continues this spring and summer to extend the new highway another eight miles.
  4. S.R. 193, Davis County. Crews are extending state Road 193, the Bernard Fisher Highway, from 2000 West (S.R. 108) on 200 South in West Point to 700 South and State Street (S.R. 126) in Clearfield. Work scheduled this spring and summer includes earthwork, utility relocations, drainage and sound wall construction. Temporary road closures or blockages may happen from time to time on local streets and trails.
  5. I-15, St. George Boulevard DDI Interchange Reconfiguration. Reconstruction work will take place on the existing diamond interchange to install southern Utah’s first diverging diamond interchange. Work is expected to begin this summer and finish by the end of the year.
  6. U.S. 89/91 Repaving, Sardine Summit to S.R. 23, Cache County. The second phase of work continues from last season’s repaving of U.S. Highway 89/91. Maintenance work will take place from Sardine Summit to Wellsville to maintain a smooth road surface and prolong the life of the roadway. Daytime lane closures will be taking place throughout the summer.
  7. I-15, 1100 South (U.S. 91) DDI Interchange, Brigham City. Work to build the first diverging diamond interchange in northern Utah will begin this summer on the I-15 and 1100 South interchange in Brigham City. Traffic may be redirected around the project throughout its duration, but crews will work to minimize delays. This project is expected to be complete next summer.
  8. U.S. 89 Improvements, Orem to Pleasant Grove. Crews will make several improvements to State Street between Orem and Pleasant Grove this summer. The road will be widened to seven lanes, repaved with new asphalt, and upgraded with curb, gutter and new sidewalks in various locations. The project will improve traffic flow and reduce congestion in the area. Drivers should expect minor traffic delays due to lane restrictions.
  9. Bangerter Highway, 13400 South CFI Installation, Salt Lake County. Construction of a new continuous flow intersection (CFI) on Bangerter Highway at 13400 South will improve the flow of traffic in this fast-growing section of the Salt Lake Valley. Lane restrictions will occur throughout the project but will take place during non-commute and nighttime hours. Construction will be completed this year.
  10. I-215 Maintenance, S.R. 201 to North Temple, Salt Lake City. A heavily traveled section of I-215 will undergo concrete repair this summer for approximately two months with occasional lane and ramp closures. Work will take place during overnight and non-commute hours to minimize delays.

We are committed to continually looking for new opportunities to proactively communicate with the public about our projects. The following are available tools to plan ahead and stay informed about our projects:

  • “UDOT Traffic” App — The UDOT Traffic app delivers critical traffic information directly to drivers 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 app now features TravelWise alerts, which provide us with a direct way to communicate with drivers at critical times. The alerts proactively communicate major traffic incidents, event traffic warnings, weather-related road conditions, construction and air quality information so drivers can plan ahead, reduce delays and arrive safely at their destinations. UDOT Traffic is free and available for download in the Apple App Store and Android Market for tablets and phones.
  • Interactive UDOT Traffic Website — The website 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 website can be accessed from www.udot.utah.gov.
  • UDOT’s Twitter Account — Follow UDOT’s Twitter feed at twitter.com/UtahDOT to receive regular updates on road construction and traffic conditions.
  • 2013 Road Construction Guide – The guide is available for download and includes a list of the 10 most significant projects.

Speed Limit Amendments

Northbound I-15 near Paragonah 80 mph speet limit sign

Existing 80 mph zone on northbound I-15 near Paragonah. Photo taken by Ming Jiang of the Traffic and Safety Division.

A number of bills passed by the legislature this past session affect Utah roads and highways. One of these bills was HB 83: Speed Limit Amendments. This bill expands portions of I-15, I-80, and I-84 where the Utah Department of Transportation may establish a posted speed limit that exceeds 75 miles per hour. These sections of freeway include, portions of I-15 from Santaquin to St. George and from Brigham City to the Utah-Idaho border. Portions of I-80 potentially affected will be from Grantsville to the Utah-Nevada border and I-84 from Tremonton to the Utah-Idaho border.

If the Department of Transportation chooses to increase the speed limit in these sections the department will evaluate the results and impacts of increasing the speed limit and will report the findings of the evaluation to the Transportation Interim Committee no later than one year after the speed limit is posted.

This bill continues a process which began a number of years ago to evaluate some of Utah’s interstates to determine if there are areas that could appropriately accommodate speed limits above what is currently posted.

Opponents of this bill feared that with an 80 mile per hour speed limit there would be an increase in accidents and that drivers would increase their speed beyond 90 miles an hour. Through the studies conducted over the past few years the department has found that this is not the case.

Beginning in 2008, studies were conducted on portions of I-15, where the speed limit was increased from 75 to 80 mph. The studies concluded that most drivers preferred to drive between 82 and 83 mph regardless of the posted speed limit. Accident rates on these stretches of freeway were also studied and concluded that the increased speed did not affect the number of accidents or fatalities.