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Law News May 07, 2015
This week, the Mississippi Transportation Commission authorized the Mississippi Department of Transportation (MDOT) to change signage along U.S. Highway 78 to I-22 once federal application procedures are completed.   U.S. Highway 78 connects Memphis to Birmingham via New Albany, Tupelo and Fulton....
News May 06, 2015
In perhaps one of the largest ballot defeats in Michigan history, voters overwhelmingly rejected Proposition 1, a sales tax increase that would have generated over $1 billion annually for road and bridge construction. Only 20% approved the measure.   “While voters didn’t support this particular...
Bridge Rescue News May 06, 2015
Construction work on the I-84 Twin Bridges replacement project near Declo, Idaho, has started with demolition of the westbound bridge.   The $17.88 million project will replace the two 1,100-ft bridges crossing the Snake River in Idaho. The bridges were built in 1960 as part of the interstate’s...
Traffic Management News May 06, 2015
There has been much vaunted conversation these last few years regarding the feasibility and potential application of vehicle-to-vehicle (V2V) technology on U.S. roads. Thus far strides in this regard could best be described as baby steps. But one state is now looking to take a great, big stretch...
Asphalt Article May 05, 2015
Steep pavement-edge drop-offs are more common on rural two-lane roads with unpaved shoulders, but also occur on roads with paved shoulders.   Typically, the unbound material at the pavement’s edge settles and erodes over time, creating a drop-off and increasing the difficulty drivers face in...
Asphalt Article May 05, 2015
Life-cycle cost analysis (LCAA) is used in many industries, including the transportation industry, to make rational decisions regarding large investments.   LCCA is designed to factor in the initial and recurring costs throughout the life of the investment to select the most cost-efficient...
Asphalt Article May 05, 2015
In 2007, the California Department of Transportation (Caltrans) made the decision to answer the question: How does warm-mix asphalt (WMA) affect performance of asphalt concrete mixes?   This decision began the first phase of a comprehensive study into the use of WMA for Caltrans by the University...
Asphalt Article May 05, 2015
Commerical and small municipal paving contractors often find themselves between a rock and a hard place.   Most take pride in being nimble and flexible, selling on the advantage of quickly servicing the needs of the customer more so than the larger, more established asphalt producer/contractor in...
Asphalt Article May 05, 2015
Chip seal and microsurfacing are two of the main preventive maintenance treatments used in Ohio for the preservation of asphalt-surfaced pavements.   The primary intent in using these two treatments is to slow pavement deterioration and defer costly rehabilitation. In Ohio, chip seal is a sprayed...
Asphalt Article May 05, 2015
Because of its many benefits, warm-mix asphalt (WMA) is becoming increasing popular with producers, paving crews and specifying agencies.   The goal with WMA is to produce mixtures with strength, durability and performance characteristics similar to or better than hot-mix asphalt (HMA) using lower...
Traffic Management Article May 05, 2015
Adaptive signal-control technology (ASCT) describes any system that collects traffic detector data, evaluates traffic-signal performance and then updates signal timing in response to that evaluation.   As part of the Every Day Counts initiative, the Federal Highway Administration (FHWA) actively...
News May 05, 2015
Congress has said you can forget about a gas-tax increase. Now, there is talk out of Washington that an increase of any kind is unlikely for the transportation sector.   The House and Senate Republicans agreed to a budget framework that would reduce highway and transit funding by 22%, which...
Article May 05, 2015
Non-recurring events, such as incidents, work zones and severe weather, have significant impacts on transportation systems. Agencies increasingly are applying operations strategies to lessen these impacts. And it is growing more and more critical that transportation agencies measure the results of...
Article May 05, 2015
Infrastructure changes often come in multiples, if for no reason other than that to alter or install one thing of major significance necessitates the alteration of all things associated with it.      The city of Toronto is undergoing a wide array of transit infrastructure changes under the...
Article May 05, 2015
As the world changes with the rapid advancement of connected devices and technologies, so must the transportation industry. In a business area where change is sluggish, DOTs across the country must adapt quickly to the evolving technologies that are going to impact their operations and budget.  The...
Highway Construction News May 05, 2015
There is a push in Washington state to finish the State Route 167 project. Washington state transportation officials consider the SR-167 Completion Project to be the critical missing link in the state's highway network.   The completion is expected to improve safety and reduce congestion along...
Article May 05, 2015
Concrete bridge structures are typically designed to last 50 to 75 years but seldom last half that time before rehabilitation is required due to degradation caused by corrosion of steel reinforcement.   Corrosion in commonly used epoxy-coated steel bars has raised both concerns regarding its use...
Bridges Article May 05, 2015
The Sellwood Bridge in Portland, Ore., is the community’s only crossing over the Willamette River for many miles in each direction. Thousands of motorists use the structure each day to travel between the city’s densely packed Sellwood and Westmoreland neighborhoods, making it the state’s busiest...
Bridges Article May 05, 2015
The Floating Bridge over Sunset Lake in Brookfield, Vt., has been a landmark for local residents for nearly two centuries—longer than state transportation agencies have existed and even before the invention of cars.   During winter months, residents near the lake would travel back and forth across...
Winter Maintenance Article May 04, 2015
The Idaho Transportation Department splits the state into six districts to make maintenance more manageable.   Each district can be vastly different from its counterparts in population, weather patterns and terrain. District 1 consists of the five northern-most counties and borders Washington,...

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