Tag Archives: Program Development

Comparison of Wintertime Asphalt and Concrete Pavement Surface Temperatures in Utah

Because winter maintenance is so costly, UDOT personnel asked researchers at Brigham Young University (BYU) to determine whether asphalt or concrete pavements require more winter maintenance. Differing thermal properties suggest that, for the same environmental conditions, asphalt and concrete pavements will have different temperature profiles. Climatological data from 22 environmental sensor stations (ESSs) near asphalt roads and nine ESSs near concrete roads were used to determine which pavement type has higher surface temperatures in winter.

Twelve continuous months of climatological data were acquired from the road weather information system operated by UDOT, and erroneous data were removed from the data set. In order to focus on the cold-weather pavement surface temperatures, a winter season was defined as the period from November through April, and the data were divided into time periods that were based on sunrise and sunset times to match the solar cycle.

To predict pavement surface temperature, a multiple linear regression was performed with input parameters of pavement type, time period, and air temperature. As shown in Table 1, the statistical analysis predicting pavement surface temperatures showed that, for near-freezing conditions, asphalt is better in the afternoon, and concrete is better for other times of the day. However, neither pavement type is better, on average, across the locations studied in this research. That is, asphalt and concrete are equally likely to collect snow or ice on their surfaces, and both pavements are expected to require equal amounts of winter maintenance, on average.

To supplement these analyses, which provided useful information about average pavement temperatures across the statewide pavement network, additional analyses of asphalt and concrete pavement surface temperatures were performed for a particular location in a mountainous region of northern Utah more typical of canyon areas. Asphalt and concrete pavement surface temperatures were directly compared at a location on U.S. Route 40 near Heber where asphalt and concrete meet end to end at the base of a mountain pass. As shown in Figure 1, an ESS was installed to facilitate monitoring of asphalt and concrete pavement surface temperatures, as well as selected climatic variables, at the site.

Data collected during the three winter seasons from 2009 to 2012 were analyzed in this research, and the same months and time periods used in the previous study were applied in this analysis as well. To compare the surface temperatures of the concrete and asphalt pavements during freezing conditions, multivariate regression analyses were performed. Equations were generated for three response variables, including the asphalt surface temperature, concrete surface temperature, and difference in temperatures between the asphalt and concrete surfaces.

The statistical models developed in the analyses show that the surface temperature of both asphalt and concrete pavement increases with increasing air temperature and decreases with increasing relative humidity and wind speed, and that the difference in pavement temperatures decreases with decreasing air temperature. For the studied site, the data indicate that concrete pavement will experience freezing before asphalt pavement for all time periods except late afternoon, when the pavement types are predicted to freeze at the same air temperature (see Table 2). Therefore, for material properties and environmental conditions similar to those evaluated at this U.S. 40 site, asphalt would require less winter maintenance, on average, than concrete.

Due to the interactions among albedo, specific heat, and thermal conductivity, the actual thermal behavior of a given pavement will depend on the material properties and environmental conditions specific to the site. As shown in this research, concrete pavement can be warmer than asphalt, which is typical of the statewide pavement network, on average, during late morning, evening, night, and early morning. However, the research also clearly shows that, in mountainous regions of northern Utah more typical of canyon areas, engineers may expect asphalt pavement to be warmer than concrete, or equal in temperature to it, during all time periods at sites that receive direct sun exposure, such as the one on U.S. Route 40 that was studied in this research. At such sites, selection of asphalt pavement may facilitate reduced winter maintenance costs; however, though statistically significant, relatively small differences in temperature between asphalt and concrete pavement surfaces may not warrant differences in actual winter maintenance practices. Other factors beyond pavement type, such as rutting and surface texture, may more strongly affect winter maintenance and should also be considered.

The results of the statewide comparison of wintertime temperatures of asphalt and concrete pavements, as well as the specific results for the U.S. 40 site near Heber, are detailed in two separate research reports available on the Research Division website.

This guest post was written by W. Spencer Guthrie, Ph.D., M.ASCE, Brigham Young University, and David Stevens, P.E., Research Program Manager, and was originally published in the Research Newsletter.

Grouted Splice Sleeve Connectors for ABC Bridge Joints in High-Seismic Regions

Photos and diagram of different kinds of GSS connectors

Figure 1. Two types of GSS connectors used: (a) FGSS, (b) GGSS, (c) FGSS-1, (d) GGSS-1

In recent years, the Accelerated Bridge Construction (ABC) method has received attention in regions of moderate-to-high seismicity. Prefabrication of bridge structural components is a highly effective method in this process and one of the ABC methods for Prefabricated Bridge Elements and Systems (PBES) advanced by the Federal Highway Administration. Joints between such precast concrete components play an important role in the overall seismic performance of bridges constructed with the ABC method. Research has been carried out at the University of Utah to investigate potential ABC joint details for bridges located in high-seismic regions. A connector type, referred to as a Grouted Splice Sleeve (GSS), is studied for column-to-footing and column-to-cap beam joints. Two GSS connectors commonly used in buildings were utilized in this study, as shown in Fig. 1. The column-to-cap beam joints used a GSS connector where one bar was threaded into one end and the other bar was grouted into the opposite end (denoted as FGSS), as shown in Fig. 1(a) and Fig. 1(c). The column-to-footing joints incorporated another type of GSS where the bars were grouted at both ends (denoted as GGSS), as shown in Fig. 1(b) and Fig. 1(d).

Drawings of the test specimen alternatives

Figure 2. Configuration of test specimen alternatives

Three precast alternatives in addition to one conventional cast-in-place half-scale model were constructed for each category, as shown in Fig. 2; the column-to-cap beam joints were tested upside down. The GSS connectors were placed in the column base (GGSS-1) or column top (FGSS-1) in the first alternative. The location of the GSS connectors changed to the top of the footing (GGSS-2) and bottom of the cap beam (FGSS-2) to study the performance of the joints when the GSS connectors were outside the plastic hinge zone of the column in the second alternative. The dowel bars in the footing and the cap beam were debonded over a length equal to eight times the rebar diameter (8db) for the third alternative in both categories, while the GSS connectors were embedded in the column base (GGSS-3) or column top (FGSS-3). The last specimen type was the cast-in-place joint, in which continuous bars from the footing and cap beam were used to build the columns with-out bar splices (GGSS-CIP and FGSS-CIP).

Photos of the speciment

Figure 3. Specimen GGSS-3 at a drift ration of 7%: (a) overall view; (b) footing dowel at joint interface

Experimental results under cyclic quasi-static loading showed that the performance of all joints was satisfactory in terms of strength and stiffness characteristics. However, the hysteretic performance and displacement ductility capacity of the specimens were distinct. Improved seismic response was observed when the GSS connectors were located inside the footing (GGSS-2) and the cap beam (FGSS-2) rather than the corresponding column end. The debonded rebar zone enhanced the ductility level and the hysteretic performance of the joints. This technique was found to be highly effective for the column-to-footing joint (GGSS-3), as shown in Fig. 3. As expected, the cast-in-place joints performed the best.

Even though AASHTO Specifications currently do not allow the use of connectors in the plastic hinge region, all joints tested in this research demonstrated acceptable ductility for moderate-seismic regions and some joints demonstrated acceptable ductility for high-seismic regions. The GSS connectors studied in this research were promising, especially when considering the time-saving potential of joints constructed using ABC methods; however, the different hysteretic performance and reduced displacement ductility of various alternatives com-pared to the cast-in-place joints must be accounted for in design.

Acknowledgments: This study is described further, including recent reports, on the TPF-5(257) website. The authors acknowledge the financial support of the Utah, New York State and Texas Departments of Transportation, and the Mountain Plains Consortium. The authors also acknowledge the assistance of Joel Parks, Dylan Brown, and Mark Bryant of the University of Utah.

This guest post was written by Chris P. Pantelides, Ph.D., University of Utah, M.J. Ameli, University of Utah, and Jason Richins, S.E., Research Engineering Manager and was originally published in the Research Newsletter

400 South Corridor Assessment

LRT Study

Figure 1. Roadway and LRT Study Network

This study evaluated current and future traffic and transit performance along the light rail transit (LRT) corridors within the University of Utah area, 400 South and Downtown Salt Lake City before and after an introduction of an additional LRT line. The analysis of different scenarios and on different network levels was performed using VISSIM microsimulation coupled with Siemens Next-Phase Software-in-the-Loop traffic controllers. The scenarios were evaluated for three different target years: 2013/2014, 2020 and 2025. Additional scenarios included alternative intersection configuration, with modified left turn operations at intersections of 400 South and Main, 400 South and State, and 400 South and 700 East.

Screenshot of the intersection simulation

Figure 2. Main Street and 400 South Intersection in Simulation

The analysis showed that the additional LRT line did not have significant impacts on traffic and transit operations. The highest impacts were experienced at intersections close to the Downtown area, mainly 400 South and State Street, and 400 South and Main Street, and North Temple and 400 West. The study also recommended potential signal improvements at these locations consisting of re-phasing, re-timing and modifying LRT preemption. The analysis also showed that it might be beneficial removing the shared lane sites at intersections along 400 South, since close to 70% of drivers are using the non-shared left turn lane, resulting in sub-optimal intersection operations.

This study was coordinated between UDOT, Utah Transit Authority, and other agencies.

This guest post was written by Milan Zlatkovic, University of Utah, Ivana Tasic, University of Utah, Marija Ostojic, Florida Atlantic University, and Aleksander Stevanovic, Florida Atlantic University, and was originally published in the Research Newsletter.

Pooled Fund: Performance-Based Assessment of Liquefaction

A new study led by UDOT and funded through the FHWA Transportation Pooled Fund Program began in March and is progressing well. The study is number TPF-5(296), entitled “Simplified SPT Performance-Based Assessment of Liquefaction and Effects.” A research team from Brigham Young University (BYU) is performing the two-year study. Other state DOTs participating in the study include Alaska, Connecticut, Idaho, Montana, and South Carolina.

Liquefaction of loose, saturated sands results in significant damage to buildings, transportation systems, and lifelines in most large earthquake events. Liquefaction and the resulting loss of soil shear strength can lead to lateral spreading and seismic slope displacements, which often impact bridge abutments and wharfs, damaging these critical transportation links at a time when they are most needed for rescue efforts and post-earthquake recovery.

Most commonly used liquefaction and ground deformation evaluation methods are based on the concept of deterministic hazard evaluation, which is related to the maximum possible earthquake from nearby faults. Recent advances in performance-based geotechnical earthquake engineering have introduced probabilistic uniform hazard-based procedures for evaluating seismic ground deformations within a performance-based framework, from which the likelihood of exceeding various magnitudes of deformation within a given time frame can be computed. However, applying these complex performance-based procedures on everyday projects is generally beyond the capabilities of most practicing engineers.

The objective of the new study is to create and evaluate simplified performance-based design procedures for the a priori prediction of liquefaction triggering, lateral spread displacement, seismic slope displacement, and post-liquefaction free-field settlement using the standard penetration test (SPT) resistance. Many of the analysis methods used to assess liquefaction hazards are based on SPT resistance values since the SPT is commonly used in site soil characterization for building, transportation, and lifeline projects.

This study represents a worthwhile pilot study which could prepare the way for additional research with the U.S. Geological Survey to further the use of the simplified, performance-based method.

Figure 1: Liquefaction loading map (return period = 1,033 years) showing con-tours of CSRref (%) for a portion of Salt Lake Valley, Utah

Figure 1: Liquefaction loading map (return period = 1,033 years) showing con-tours of CSRref (%) for a portion of Salt Lake Valley, Utah

The key to the simplified method is the use of a reference soil profile in development of liquefaction loading maps which are then used with the site’s soil data to estimate effects of liquefaction. An example map is shown in Figure 1, where CSRref represents a uniform hazard estimate of the seismic loading that must be over-come to prevent liquefaction triggering, if the reference soil profile existed at the site of interest.

Derivations for simplified performance-based liquefaction triggering and lateral spread displacement models have been completed in the study. Validation efforts have shown that the simplified results approximate the full performance-based results within 5% for most sites that were evaluated.

A summary of the study work plan and copies of current reports from the study are available at the TPF-5(296) study website.

This guest post was written by Kevin Franke, Ph.D., P.E., from BYU, and David Stevens, P.E., Research Program Manager, and was originally published in the Research Newsletter.

Results of the 2014 Research Workshop (UTRAC)

Photo of session attendees listening to speaker

Traffic Management & Safety breakout session

Projects have been selected for FY15 funding from the 2014 UDOT Research Workshop held on April 30th.

Fifty-nine problem statements were submitted this year for the UDOT Research Workshop. Of these, 16 will be funded as new research projects through the Research Division. Some submitted problem statements will be funded directly by other divisions.

The workshop serves as one step in the research project selection process which involves UDOT, FHWA, universities, and others. UDOT Research Division solicited problem statements for six subject areas: Materials & Pavements, Maintenance, Traffic Management & Safety, Structures & Geotechnical, Preconstruction, and Planning.

At the workshop, transportation professionals met to prioritize problem statements in order to select the ones most suitable to become research projects.

After the workshop, UDOT Research Division staff reviewed prioritization and funding for each recommended problem statement with division and group leaders and presented the list of new projects to the UTRAC Council.

The selected new projects include:

  • Asphalt Mix Fatigue Testing using the Asphalt Mix Performance Tester (CMETG)
  • Developing a Low Shrinkage, High Creep Concrete for Infrastructure Repair (USU)
  • Prevention of Low Temperature Cracking of Pavements (U of U)
  • Review and Specification for Shrinkage Cracks of Bridge Decks (U of U)
  • Incorporating Maintenance Costs and Considerations into Highway Design Decisions (U of U)
  • Unconventional Application of Snow Fence (UDOT)
  • Statistical Analysis and Sampling Standards for MMQA (U of U)
  • National Best Practices in Safety (UDOT)
  • I-15 HOT Lane Study – Phase II (BYU)
  • Characteristics of High Risk Intersections for Pedestrians and Cyclists-Part 3 (Active Planning)
  • Safety Effects of Protected and Protected/Permitted
  • Left-Turn Phases (U of U)
  • Development of a Concrete Bridge Deck Preservation Guide (BYU)
  • TPF-5(272) Evaluation of Lateral Pile Resistance Near MSE Walls at a Dedicated Wall Site (BYU)
  • Active Transportation – Bicycle Corridors vs. Vehicle Lanes (BYU)
  • Investigating the Potential Revenue Impacts from High-Efficiency Vehicles in Utah (UDOT)
  • Developing a Rubric and Best Practices for Conducting Bicycle Counts (Active Planning)

At the April 30th workshop, Dr. Michael Darter of Applied Research Associates gave an inspiring keynote ad-dress on collaboration between state DOTs and academia in developing innovative ideas. Also at the workshop, Barry Sharp, recently retired from UDOT, was presented with the UTRAC Trailblazer Award for his significant contributions towards improving UDOT research processes and the use of innovative products in transportation. Russ Scovil was our workshop coordinator and did a great job.

We appreciate everyone’s participation in the work-shop process. The new research projects can start as early as July 2014 in coordination with UDOT Research staff and champions.

To see details on the new projects and all submitted problem statements, visit the UDOT Research Division website.

This guest post was written David Stevens, P.E., Research Project Manager, and was originally published in the Research Newsletter.

Accepting Public Comments on the FTA DBE Goal

The UDOT public transit team is currently developing their federal fiscal year 2015-2017 Disadvantaged Business Enterprise (DBE) goal for its Federal Transit Administration (FTA) Program. Part of this process includes public input.

The proposed DBE goal and methodology can be found on the UDOT website at www.udot.utah.gov/publictransit under the Hot Topics and Quick Links section. It is titled “UDOT FTA DBE FY2015-2017 Proposed Goal and Methodology.” A hard copy is also available for review at the UDOT Calvin Rampton Complex in the Program Development division at 4501 South 2700 West on the third floor in Salt Lake City, Utah.

Comments may be provided to the UDOT via email at publictransit@utah.gov or via mail addressed to:

UDOT Program Development
Attn: Public Transit Plans and Programs Director
4501 S 2700 W
P.O. Box 143600
Salt Lake City, UT 84114-3600.

Please include the page number, section number, and a detailed comment with your submission.

The document will be available for review from June 5, 2014 through, and including, July 4, 2014 and comments will be accepted through July 19, 2014. Only comments related specifically to the DBE goal and the development of the goal will be accepted. All other UDOT or DBE-program related comments should be directed to the appropriate contact provided on the main UDOT website.

Consider a Map

Online maps are serving as great communication tools for UDOT Planning’s efforts to develop and improve facilities for pedestrians and cyclists.

A coordinated active transportation network for pedestrians and cyclists is an essential part of an integrated transportation system that considers the needs of all users. Recently, UDOT Director Carlos Braceras listed five areas of focus for the agency, and he included integrated transportation:

Photo of Road Respect bicyclists riding in traffic“UDOT will actively consider how to best meet the needs of trucks, bikes, pedestrians and mass transit when studying transportation solutions and ensure those solutions are applied to the most appropriate facilities. We will strive to provide Utahns with balanced transportation options while planning for future travel demand.”

How can UDOT employees meet the challenge of communicating and coordinating with the diverse transportation user groups? One way is by using online maps as communication tools.

“When you have a precise illustration, which a map provides, it gets everyone on the same page by relaying a lot of information in a concise, coordinated way,” says Evelyn Tuddenham, UDOT’s Walking and Biking Coordinator in the planning division. “Maps contain so much information – it allows viewers to see the ebb and flow in ways that you can’t accomplish just by looking at numbers.”

Maps as communication tools can enhance collaboration and help convey a distinct message. Here are some examples of how maps are being used to help plan a coordinated active transportation network:

The Utah Collaborative Active Transportation Study (UCATS) used online maps on an interactive website to show pedestrians and bicyclists existing facilities and then get feedback about where improvements are needed. Study participants used that information to identify a proposed regional bicycle network that will improve and extend the state’s active transportation system by making facilities safer and improving connectivity to transit.

The outcome of the UCATS study will have a huge impact on the active transportation in Utah by identifying needed improvements and systematically planning ways to coordinated and implement active transportation infrastructure.

screenshot of Utah Bike Maps websiteThe UDOT Walking and biking program is using a series of maps to show cyclists existing routes. The map series idea was proposed by Nick Kenczka, Research Consultant in UDOT Systems Planning and programming. Tuddenham resisted the idea at first, thinking that one map would be simpler.

“It turned out to be a great way to talk to cyclists,” Tuddenham says of the series. “Having a set of maps breaks information down and allows us to present the information in a more coherent way.”

Each map has a separate focus and a separate message. Altogether, the series is an effective tool for cyclists with different needs. Recreational cyclists can check out shoulder widths and other infrastructure elements, the difficulty of the terrain and the screen shot of popular rides online maplength of the route to plan trips. Bike commuters can use the maps to see traffic volume information and to check route. Cyclists can even zoom into specific areas on the maps and take a virtual ride down the road to see what they could encounter on a particular route. The maps are useful tools that can help cyclists make informed travel decisions.

Give it a try

Using maps to communicate is easier than you think. The UPlan Map Center, available on the UDOT Data Portal, allows users to build a custom map, or several maps, quickly and easily. Pre-built maps can also be used and changed to suite communication needs.

Combining a series of maps, like the ones used to communicate with cyclists, takes the help of a UDOT eGIS expert. Contact information for the eGIS team is available on the UDOT Data Portal.

More about maps:

UDOT Traffic App Tutorial

Wouldn’t it be nice to have access to all of Utah’s weather, traffic information, major construction and road delays? Fortunately the Utah Department of Transportation has made this possible through a smart phone application called “UDOT Traffic”.

The traffic app has several different features which include a detailed map, alerts, road weather and mountain pass information. All of this data comes from the UDOT Traffic Operations Center (TOC) which provides 24/7 monitoring for roads around the state.

Here is a step by step tutorial of how to utilize the app’s features and information.

The map contains several different options that include: cameras, incidents/planned events, construction, overhead freeway signs otherwise know as Variable Message Signs (VMS) and traffic congestion. With your smart phone you can zoom to common locations, search a certain address or use your current location.

Areas of Utah can be selected based on common locations as well as being searched.

Areas of Utah can be selected based on common locations and searched as well.

Specific symbols can be selected or deselected to find a specific camera, construction zone, sign or alert.

Specific symbols can be selected or deselected to change what is visible on your map.

This map of Utah contains symbols representing cameras, construction sites, alerts, and VMS signs.

This map of Utah contains symbols representing cameras, construction sites, alerts, and VMS.

Map with just construction.

Here is a map with all the construction sites listed in Utah. By selecting a specific barrel, details can be found about the place, duration and lane closure information.

A camera view from US-6.

This is a camera view from U.S. 6 but other highways are available on the UDOT Traffic map. Camera images are updated regularly and include a time stamp so you know how recent the image is.

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VMS can also be viewed from the app. These show current travel times between the sign and certain locations.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Alerts are the second feature available from the main menu across the bottom and contain advice and warning information regarding emergencies, TravelWise, road conditions, incidents, special events, construction and seasonal roads.

An example of an alert with information on the locations and nature of the incident

Details on each alert can be accessed from a list or viewed on the map.

An example of an alert with information on the locations and nature of the incident

This is an example of an incident alert on the map. It contains information on the location, nature of the incident and impact.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The third main feature of the app is all about weather. This section contains travel advisories, available during the winter months, as well as road forecasts and reports directly from our weather stations. Road forecasts and weather station data are available all year.

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Travel advisories, weather stations and road forecasts are available in the Weather section of UDOT Traffic App.

This is an example of a Road Forecast that will update every 3 hours with current weather.

Road Forecasts are created by TOC meteorologists and have details broken down in 3 hours increments up to 24 hours in advance.

The Weather Stations display graphs and data for what to expect concerning temperature, wind, dew point etc.

The Weather Stations option displays graphs and data directly from RWIS around the state. This includes temperature, wind, dew point, etc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The final portion of the app includes Mountain Passes. Mountain Passes are often impacted first by incoming weather. To help travelers understand what they will encounter in these areas we have consolidated them into one part of the app.

 A list of all the mountain passes in Utah are available in this section of the app.

A list of all the mountain passes in Utah are available in this section of the app.

Once a mountain pass is selected information with cameras and weather is available.

Once a mountain pass is selected information specific to that area, including cameras and weather forecasts, are available.

A camera view of Sardine Summit mountain pass.

A camera view of Sardine Summit mountain pass.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

These are some tips and tricks to navigating UDOT ‘s Traffic App. The application is available for iPhone and Android devices and can be downloaded for free through your smart phone’s app store.  For more information on how UDOT receives data and traffic information check out this blog written about UDOT’s  Traffic Operations Center. http://blog.udot.utah.gov/2013/06/optimizing-mobility-udots-traffic-management-division/

Black Sand

What black sand looks like.

What black sand looks like.

UDOT recently tested an innovative product used to help enhance the snow melting process during the clearing of mountain passes in the spring. The material is called “black sand” and was tested near Monte Cristo summit in Weber County as an agent to save future time and money.

Special Crews Supervisor, Kelly Andrew, conducted the study and ran tests, to see how effective the black sand would actually be. The result was extremely positive and indicated this method could save UDOT a significant amount of time in the snow removal process as well as in equipment costs.

Black sand has been a tried and tested method farmers have used for years in order to clear snow from the ground to plant their crops faster, rather than letting it melt on its own. Andrew noticed how effective it had been for them and thought, “Why wouldn’t it work for us on roads?” This led to acquiring the material and testing certain sections of snow to see which areas melted faster, those with black sand or those without.

Loading the black sand

Special Crews Supervisor, Kelly Andrew looks on as workers load the black sand.

So how does it work? Black sand uses solar energy to create heat that in turn helps melt snow faster. Vic Saunders, Region One communications manager, used wearing a black shirt as an example of how the black sand works.

Black Sand 2

Spreading the black sand at Monte Cristo Summit.

“If you were to go outside wearing a dark shirt, you would get warmer than you would wearing a white shirt… the black enhances the melting process because it is absorbing the solar rays rather than reflecting them.” Saunders said.

According to Andrew, the black sand is a fine powder-like substance that was lightly spread with a large snow machine. Utah State University conducted a study testing the components of the sand, which consists of 95 percent pure sand and the rest inert elements that are not harmful to the environment.

After a four-week testing period, Andrew and his team found that areas where black sand had been distributed showed significant progress in the melting process over the parts of snow that had been left alone.

The advantage of this new black sand is not only that it makes the process of clearing the mountain passes easier but it also saves taxpayers money. Money is saved on time because the more snow that has melted means less to remove and less wear and tear on expensive equipment that is costly to operate.

The black sand method would not replace salt that is used on highways and freeways to help remove snow and ice; rather it’s an additional agent to be used on closed roads with heavily packed snow.

“We didn’t use the black sand to help us open the road earlier but we did it to make ourselves more efficient,” Saunders said.

The sand will continue to be tested as an additional tool in the snow removal process for mountain passes in the upcoming winter months.

Photos were provided by Kelly Andrew and Vic Saunders from Region One. 

UDOT Leads at GIS Conference for Innovation and Progress

UPLANThe Utah Department of Transportation was recently recognized by the American Association of State Highway and Transportation (AASHTO) at a national conference held in Boise, Idaho May 6-8. UDOT has been acknowledged for the way we utilize Geographic Information Systems (GIS) in transportation.

UDOT stands out as a leader among the nation’s DOTs for our advancements with the highway mapping system known as UPlan. UDOT also received an honorable mention in the Transportation Publication division map competition for the Utah State Highway Map.

UDOT GIS Manager Frank Pisani attended the conference and said he was approached by nearly a dozen states who expressed interest in emulating UDOT’s implementation of UPlan.

So what exactly is UPlan and UGate?  “UPlan is an interactive mapping platform that supports UDOT by helping visualize our data, track our assets and strengthen our transportation planning with better analysis and collaborative information,” Pisani explained.

“UGate is the database and UPlan is the front end,” Pisani said. “UGate is behind the scenes as the engine that powers UPlan.”

The UPlan website is used as an information system where data can be tracked and recorded for both internal and public audiences. Due to it success, the federal government is also encouraging state to implement a similar system..

The Federal Highway Administration also highlighted UDOT as a model for other states for our Highway Performance Monitoring Systems and the approach we use with Linear Reference Systems.

Frank Pisani explains Linear Reference Systems:  “This is how UDOT coordinates with other state organizations like 911, highway patrols and local governments to collectively maintain 1 road network.”

Pisani said he was approached by a fellow conference attendee who claimed he had been coming to the conference for more than 20 years., “Three years ago UDOT wasn’t even here,” the man said. “And now you guys have taken over.”

UDOT has surpassed other state DOTs in the way we have been able to accomplish more with limited resources.

“UDOT has direction, support and good technology that is helping us capstone a lot of our efforts,” Pisani said. “We are trying to use technology to the best of our ability to inform the department and also the public that we are using this as an information tool and we are making the best out of the technology and data that is out there. UDOT is innovative in all aspects of the department and our technology focus is just one of them.”