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Asphalt

Welcome to the Asphalt Channel, a special feature that provides the user an in-depth look at the hot-mix asphalt industry.  This section offers several areas to explore: product spotlights, article archives, related case studies, related video and product/supplier contact list.   The product spotlights contain information and photos of equipment relevant to the industry.   The article library contains all stories related to asphalt roads pulled from the rich archives of Roads & Bridges magazine and our Asphalt Today supplement magazine.

Article February 09, 2016
In the 1970s, the oil shock caused by the Arab Oil Embargo led to petroleum shortages and long lines of drivers hoping to fill their tanks. Although less visible to the general public, the asphalt pavement industry also had to adjust its practices to manage tightened supplies of asphalt binder....
Article February 09, 2016
Pennsylvania’s S.R. 6 describes an almost riveresque course through Wyoming and Lackawanna counties, the topography of which ranges from urban centers to rolling hills of pure greenery.   The S.R. 6 Lackawanna Trail restoration project runs through the northern half of Lackawanna County and the...
Article February 09, 2016
A two-lane blacktop road in Cortland County, N.Y., benefited from a sophisticated pavement preservation overlay that combined two lifts and two types of cold mix pavement that are anticipated to provide a high level of service in the years to come.   It’s no secret that local government agencies...
Article February 09, 2016
What does it take to create a superbly smooth pavement?   The formula applied by Hutchens Construction for a recent project on Highway 62 in northwest Arkansas involved a bit of technology, a devotion to best practices and some wisdom from an ancient Greek philosopher.   In late 2013, Nabholz Corp...
Article February 09, 2016
There is a theory that too many cooks in the kitchen makes for a lousy sauce.   But this isn’t strictly the case, as evidenced by a major interstate project in Washington State.   Two major challenges faced the I-405 Express Lanes project, which ran from Bellevue to Lynnwood along a 17 mile...
Article February 09, 2016
Rain runs off pavement and causes problems.    It changes the temperature of neighboring rivers and streams, carries garbage into wetlands and creates headaches for people whose driveways slope toward their garages. To avoid these and other problems, new pavement projects are required to have...
Article February 08, 2016
Pavement recycling processes can be effective for reducing the costs and environmental impacts of pavement rehabilitation and reconstruction.   However, the performance of these processes has been difficult to predict since the structural properties of the recycled materials are not well quantified...
Article February 08, 2016
In the asphalt paving industry, the cost of building asphalt pavements continues to rise.   As a result, the asphalt industry continues to find ways to stretch road-building dollars while attempting to maintain the quality of asphalt mixes.   Figure 1. Recycled binders from both RAP and RAS are...
Article February 05, 2016
  The biggest change the Colorado Department of Transportation (CDOT) will pocket came in the form of quarters.   Coring the pavement more frequently led to excellence on the SH 133 job between Carbondale and Redstone, Colo., so much so that it helped win a 2016 Roads & Bridges/Asphalt...
Article February 05, 2016
The Blue Ridge Parkway is a scenic highway set high in the mountains of Virginia and North Carolina.   Unlike a standard highway that is optimized to carry the maximum number of vehicles from here to there, directly as possible and at high speeds, the Parkway was designed to showcase the beauty of...
Article February 05, 2016
    A severely distressed section of I-10 in rural western Texas had structural failures that ran deep. Past maintenance for this 11-mile-long, 4-lane-wide stretch of I-10 near Balmorhea was purely surface level. The particular stretch of the highway was marred by sunken spots, rutting and other...
Case Studies February 05, 2016

The finished product of an underground corrugated metal pipe that underwent a full rehabilitation.

At the end of a cul-de-sac in Houma, La., in Terrebonne Parish, a corrugated metal pipe ran along the back of two residential properties. Like so many of these pipes across the country, it was deteriorating and in desperate need of replacement.   Because of the location of the pipe, there were...
News February 03, 2016
A section of the 157-mile Indiana Toll Road, which stretches across the northern portion of the state between Ohio and Illinois, will undergo $200 million in improvements including new asphalt and bridge work.   Work is slated to begin in March on a 70-mile stretch describing a path from mile...
Case Studies January 19, 2016

Redi-Rock gravity retaining walls in the Limestone texture were used to accommodate the grade change of this sloping construction site.

Grade changes and wetlands presented a major challenge to designers of the new Mount Kisco Medical Center.The access road to the development needed to meet the grade change requirements, minimize disturbance to the wetlands, and keep the site fully functional during construction. See how the design...
News January 06, 2016
The Texas Department of Transportation (TxDOT) has $1.27 billion projects in the works in the Houston area, spanning eight counties.   One of those is the Grand Parkway, where construction continues to progress. The project requires installing 3,802 concrete beams and pouring 121 bridge decks. ...
News December 30, 2015
The Arizona Department of Transportation (ADOT) has selected a preferred developer for the Loop 202 South Mountain Freeway, which remains on track for construction to begin in summer 2016 as the largest-ever highway project in the state.   This is the first highway public-private partnership in...
Case Studies December 10, 2015
Between December 13, 2014, and March 15, 2015, the New York City Department of Transportation (NYCDOT) filled nearly 160,000 potholes. But while all potholes need to be repaired, not all pothole repairs are the same.   The NYCDOT was considering reconstruction options for 1st Avenue, which had been...
Case Studies October 23, 2015
To address the pavement distresses caused by upstate New York’s extreme changes in temperature, the New York State Department of Transportation (NYSDOT) had been using a variety of hot and cold patches for repairs. While this is a common practice in many states, it is rapidly changing due to the...
News October 20, 2015
Nevadans looking for information on road construction improvements and projects have a new resource through the Nevada Department of Transportation’s electronic Statewide Transportation Improvement Program (STIP).   The new website, available at estip.nevadadot.com, includes details and maps of...
Case Studies October 08, 2015

The aggregate layer helps increase traction.The finished pavement overlay installation.

Two bridges in Toledo, Ohio, had undergone routine maintenance over the years. But while the bridges themselves were structurally sound, David Pratt and his public works team soon realized that further repairs to the wear surface were inevitable down the road.   Rather than plan for continual...
Overlay Init