You are here

News

Maintenance Article February 06, 2015

Photo courtesy of the Virginia DOT.

During the winter season the state of Vermont becomes a playground drawing people from across the country to enjoy activities such as skiing, snowboarding and snowmobiling. Unfortunately, the very same snow and ice that creates a winter wonderland in the mountains also creates a winter gauntlet on...
Bridges Article February 06, 2015

The 3,300-ft-long Tanana River Bridge provides the U.S. military with a vital connection to 1 million acres of training ranges—the largest in the U.S. It is Alaska’s longest bridge.

The word Tanana means “trail river.” The new Tanana River Bridge in Salcha, Alaska, a small community located south of Eielson Air Force Base, provides a trail across the river—a vital connection to 1 million acres of U.S. military training facilities in Alaska. Construction of the bridge marks the...
Asphalt Article February 06, 2015

Two case study OGFCs were constructed as part of the 2012 NCAT Pavement Test Track, which used GTR-modified binders and no fibers. No cracking or raveling are evident in either test section to date.

Asphalt mixtures are commonly comprised of various ratios of aggregate, asphalt binder and air. While this is usually the case for standard dense-graded Superpave mix designs, specialty mixtures such as open-graded friction courses (OGFCs) and stone-matrix asphalt (SMA) mixes typically contain some...
Asphalt Article February 06, 2015
A full-depth reclamation (FDR) project involving the removal of a failed portland cement concrete pavement and the construction of an 8-in. stabilized reclaimed asphalt pavement (RAP) and aggregate base with an engineered asphalt emulsion, is hardly an event of Biblical proportions. But the long-...
Asphalt Article February 06, 2015
Pavements continue to be among the most recycled materials on the planet. Over the past several decades, the asphalt industry has successfully innovated the use of reclaimed asphalt pavement, or RAP. This has inarguably led to significant environmental and economic benefits. To move the needle...
Asphalt Article February 06, 2015
By the beginning of 2014, Mooney Road through California’s Sierra Nevada Mountains bore a strong resemblance to its lunar namesake.  “The road gets lots of heavy truck traffic for logging, plus lots of snow and ice build-up in the winter, so the whole thing was wheel-rutted out,” Weston Hutchings,...
Asphalt Article February 06, 2015
Reclaimed asphalt pavement (RAP) has rapidly become a dependable means of resurrecting roadways in the state of California. As Greg Kelley, assistant deputy director for the Geotechnical and Materials Engineering Division of Los Angeles County, told Roads & Bridges, “Every agency should...
Asphalt Article February 06, 2015
Several of the trees entrenched in the landscape covered by District 2 of the Pennsylvania Department of Transportation (PennDOT) are marked to become a piece of expensive furniture.You can’t find better cherry, maple or oak wood anywhere else in the U.S. Unfortunately the roads which service the...
Asphalt Article February 05, 2015
The winter of 2013–14 was a brutal one for residents of Merrillville, Ind., and nearby Crown Point. Roads in these Chicagoland communities south of Lake Michigan took a pounding from extended cold, snow and ice. “The roads were in real rough shape after that long, hard winter,” said Scott Rediger...
Asphalt Article February 05, 2015
Binders, quality aggregate and performance-related mix design procedures are all important factors in dictating how long a new road surface will last. For many years, researchers have traditionally focused on these rather than identifying the root cause of early surface failures, which is often...
Asphalt Article February 05, 2015

Photo courtesy of the NY DOT.

In 2011, almost 71% of the petroleum used in the U.S. was used in the transportation sector, accounting for 27% of U.S. energy demand. Despite a 50% increase in the overall fuel economy of passenger vehicles between the years 1973 and 2000, the average fuel economy of heavy vehicles increased less...
Asphalt Article February 05, 2015
When the National Center for Asphalt Technology (NCAT) started its 2012 research cycle, the famed Pavement Test Track was not the only home for the center’s cutting-edge asphalt-pavement research. As part of NCAT’s Preservation Group (PG) experiment, researchers tracked the effects of traffic and...
Asphalt Article February 05, 2015
The harsh winters and colder temperatures experienced in northern Wisconsin can have a significant negative impact on long-term performance of asphalt pavements. Cold weather contraction and brittleness of asphalt driving surfaces can result in cracking and other defects. As a result, cities and...
Asphalt Article February 05, 2015
When Kelly Paving Inc., a division of Shelly & Sands, won the $6.5 million contract to repave a section of I-70 in West Virginia, they faced two challenges. The first was executing the job itself, covering 5.81 miles of eastbound and westbound lanes between I-70 straight line mileage point 2.17...
Traffic Management News February 05, 2015
A new report from the Public Interest Research Group (PIRG) assesses the use of advanced transportation technology in 70 cities across the U.S., with Austin, Texas, leading all others in adopting new resources.   The PIRG report focuses on 11 up-and-coming technologies changing public...
News February 05, 2015
In the first of four planned public hearings on toll rates in the state of Washington, officials from the Washington Department of Transportation (WSDOT) recommended Tuesday a maximum toll fare of $12 for those travelers using I-405 without a Good to Go! Pass. The pass is the state’s electronic...
Pothole Patching Case Studies February 04, 2015

The DuraPatcher provides a permanent repair by spraying a mixture of emulsion-coated aggregate with sufficient force to compact the mixture as it is applied in layers.

,

City workers In Fargo recognized that the emulsion tank was the key to their pavement preservation program’s success.

In the far northern reaches of the continental U.S., pavement maintenance supplies can often be in short supply, depending on the time of year. This can seriously impede pothole patching as asphalt plants close for the winter. The City of Fargo, ND, only 160 miles from Canada, took matters into its...
News February 04, 2015
On Feb. 3, the Washington State Department of Transportation (WSDOT) filed a $17 million lawsuit in Skagit County Superior Court over costs associated with the 2013 Skagit River Bridge collapse on I-5.   On May 23, 2013, a large tractor-trailer combination with an over-height load slammed into...
Traffic Management News February 03, 2015
Truckers traveling I-75 in eastern Tennessee will be able to spend less time searching for places to park and rest thanks to a new smartphone-based technology being built by the Tennessee Department of Transportation (TDOT).   The SmartPark pilot program is the brainchild of TDOT and the Federal...
Law News February 03, 2015
On Capitol Hill, the talk of the transportation world has largely, if not exclusively, centered around whether an increase to the present 18.4 cents per gallon gasoline tax is the prudent measure to take in order to assuage the possibility of infrastructure funding failure in the imminent future....

Pages

Overlay Init