Case Studies

Learn how recent infrastructure projects improved safety, increased efficiencies, trimmed costs and implemented new technologies.

Inclined Curb Inlet Risers.
Inclined Curb Inlet Risers.
Custom Inclined Curb Inlet Risers Save 400 Man Hours on IDOT paving project
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The three bridges over the Firth of Forth (from left to right); the Forth Bridge, the Forth Road Bridge, and the Queensferry Crossing.
The three bridges over the Firth of Forth (from left to right); the Forth Bridge, the Forth Road Bridge, and the Queensferry Crossing.
Award Winning Queensferry Crossing Bridge
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Smart arrow boards include GPS units, enabling DOTs to send real-time information to drivers.
Smart arrow boards include GPS units, enabling DOTs to send real-time information to drivers.
ATSSA explores work zone technology applications
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Shallow plane failures on a steep roadway slope threatened I-80 and an access road for a Caltrans maintenance station.
Shallow plane failures on a steep roadway slope threatened I-80 and an access road for a Caltrans maintenance station.
Stabilizing Transportation Infrastructure with Minimal Carbon Impact
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The Longbird Bridge looking northeast. Photo by Akil Simmons.
The Longbird Bridge looking northeast. Photo by Akil Simmons.
Hot-Dip Galvanized Rebar Serves Bermuda Bridge for 7 Decades
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teton pass
CrashGard sand barrels act as a crash cushion along the Teton Pass in Wyoming.
Wyoming’s New Approach to Highway Crash Cushioning
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sign shop
WSDOT manufactures about 60 percent of its signs in-house at its Union Gap, WA-based sign shop.
Washington State DOT Finds Success With Digital Sign Printing Specification
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The western bridge span.
The western bridge span. All photos courtesy of The Reinforced Earth Company.
Constructing Northern Virginia's first diverging diamond interchange
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