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Many roads are located in areas of the world where high-quality construction aggregates are scarce. Therefore, when high-quality aggregates are needed for pavement-...
The corrosion of post-tensioned (P-T) tendons in the nation’s bridges has become an increasingly significant problem. A growing awareness of the situation has prompted state...
The Jesup South Bridge in Buchanan County, Iowa, is located on one of the busiest roads in the county. Constructed in 1947, the old bridge had a sufficiency rating of less...
On Feb. 9, 2014, the Stan Musial Veterans Memorial Bridge officially opened to traffic in the St. Louis area. The long-anticipated, $700 million New Mississippi River Bridge...
It is the biggest change in asphalt specifications in California since the state transportation department went to a quality control/quality assurance model in the 1990s, and...
When torrential rains unprecedented in memory wiped out miles of roads and bridges in Colorado’s populated Front Range last September, state, city and county road agencies...
Density is usually a good thing in asphalt pavement. The more density, the better. Occasionally road builders want gaps in the asphalt, though, voids that make the asphalt...
When roads have term limits you know there is a chance of a strong candidate in something. A 15.3-mile stretch of I-44 in Jasper County, Mo., had reached the end of its time...
For having the second-most number of bridges in the nation, Ohio is in a relatively strong position as its more than 44,000 structures score better than the national average...
Most urban emergency snow-response programs focus on one aspect of travel: the automobile. Plow routes are designed to move vehicular traffic safely around the city. However...
Typical traffic paint and tape do not provide effective delineation during wet, nighttime conditions. Steel-casting snowplowable markers have been used by the Kentucky...
Just before Labor Day weekend 2013, a fleet of 16 cold mills hustled night and day to prepare the east- and west-side approaches to the new Bay Bridge East Span for asphalt...
Over the last decade, the Missouri Department of Transportation (MoDOT) has partnered with contractors to find innovative ideas to improve the roads and bridges in the state...
Highway agencies in today’s economy are facing an ongoing need to search for ways to reduce construction costs. At the same time, public demand for environmental...
Taking a first glance at the Karn Weadock generating complex, a person might think the idea of rehabilitating the entire on-site road network was for the birds. That is...
We have all probably dripped water into a pan of very hot oil on the stove and been startled by the violent, cracking sizzle. That is analogous to what happens when you spray...
Alaska is not particularly known for its thaws. However, officials in the northeast U.S. are starting to warm up to the idea of cold in-place recycling, and the 49th state of...
Could one step to improving the condition of the nation’s bridges really be as easy as communicating better? I think so. I maintain nearly 1,200 bridges, which make up one-...
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If you were to conduct a study about how citizens in a specific region are getting from point A to point B, you would likely find that the number of miles traveled by vehicle...
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In the far-flung world of intelligent transportation systems (ITS), forces are beginning to coalesce toward a goal of a much more efficient and safer environment.   This...

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High-occupancy toll (HOT) lanes and carpool lanes could be coming to the 14th Street Bridge in Washington, D.C., after the city council votes on a...
A week after the historic slide of the Milton-Madison Bridge, traffic is again flowing across the Ohio River span that connects Milton, Ky., and...
San Francisco became the third city piloting the RideScout transportation aggregator app last week, joining Washington, D.C., and Austin, Texas....