Two major Interstate 17 bridges in Phoenix were recently repaired using a new carbon-fiber technique developed by a Tucson company.
The Arizona Department of Transportation says the repairs focused on bridge girders that were damaged when they were struck by over-height vehicles. Instead of a normal repair method, such as injecting epoxy to rebuild sections of the concrete girders, ADOT wrapped the girders in a strengthening material called Fiber Reinforced Polymer, or FRP — carbon-fiber strips that…. read more
Source: Arizona Highways