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E&B Paving crew places a concrete overlay on S.R. 3 in Henry and Delaware Counties, Indiana. The pavement was 9 in. thick with variable thicknesses at bridge transition areas.
E&B Paving crew places a concrete overlay on S.R. 3 in Henry and Delaware Counties, Indiana. The pavement was 9 in. thick with variable thicknesses at bridge transition areas.
The first documented use of concrete to resurface pavements dates back to 1901. That first concrete overlay was one of 15 placed between 1900 and 1915, a fact that might surprise some people, considering that the first concrete pavements were placed in 1892 and 1893. Although overlay technology has…
January 06, 2021
The Need for Better Traffic Management During Turbulent Times
Image: one.network
Simon Topp There’s no question: road agencies are operating in turbulent times. From the COVID-19 pandemic and the 2020 presidential election to ongoing civil unrest, there have been unprecedented interruptions to the national road network. The adoption of practical, effective traffic management…
December 09, 2020
Automakers are competing on a global scale to bring new features and technologies to market first. That constant pressure to innovate might be getting to some of the executives at the largest auto companies, whose recent patents have been rather … interesting. For example, in 2017 Toyota filed a…
April 01, 2020
Michigan 3DOBS project
The 3-D optical bridge evaluation system (3DOBS) uses a vehicle-mounted camera combined with an image analysis software that would allow bridge inspectors to scan the finer details of bridge decks at near-highway speeds without the need for lane closures or exposing workers to potential traffic hazards.
A major motion picture is coming to theaters courtesy of the Michigan DOT (MDOT) and Michigan Tech Research Institute (MTRI).   Or … so one would think based on the fact that the two entities are engaged in a partnership to develop a system that captures high-quality images of concrete bridge decks…
December 02, 2019
According to the Federal Highway Administration’s (FHWA) Office of Highway Policy Information, nearly 53% of rural highway mileage is under county ownership, with most county-owned roads not receiving federal aid (1). Title 23 of the United States Code requires states to spend at least 40% of…
June 24, 2019
Sixth Street Viaduct
Sixth Street Viaduct photos courtesy of Gary Leonard
SIXTH STREET VIADUCT Los Angeles, California By Nader Naderi, P.E. and Karen Cormier, P.E. During its 84-year lifespan, concrete elements of the now-demolished Sixth Street Viaduct cracked and deteriorated due to an internal chemical reaction known as alkali silica reaction (ASR), which is caused…
June 07, 2019
Traffic signals are among the most popular targets of hacking in fiction. In a number of movies, TV shows and video games, traffic signals are manipulated to let the hacker and his/her friends make their escape from police pursuit. These scenes may not be realistic now because existing…
May 08, 2019
Back in the September 2015 issue, Roads & Bridges examined the use of unmanned aerial vehicles (UAVs, unmanned aerial systems [UAS] or “drones”) in various DOTs across the U.S. One agency of interest was the Michigan DOT (MDOT). MDOT began to use UAS for bridge inspections, confined space…
April 01, 2019
Rediscovering yourself sometimes calls for a major purchase. The Jackson County, Mich., Department of Transportation is not ashamed of holding the receipt. Business as usual was not going to help 900 miles of road take a turn for the better. Officials knew something different had to be done, and…
February 06, 2019
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