Susceptibility to extreme seismic forces need not be a barrier to the use of accelerated bridge construction methods, according to researchers at the University of Nevada, Reno’s Earthquake Engineering Laboratory.
Six months after Hurricane Maria hit Puerto Rico on Sept. 20, landslides, broken traffic lights and reconstruction traffic make Edgar Iñesta’s commute halfway across the 100-mile-wide island a slow crawl.
Philadelphia’s U.S. Route 13/Frankford Avenue Bridge, the nation’s oldest active vehicular structure, is set to undergo rehabilitation work that will keep it in service for several decades.
Permanent floating bridges are essentially boutique structures that only make sense for certain rare kinds of sites: unusually deep bodies of water and/or bodies of water with very soft bottoms, where piers are impractical.
Three years after its much-publicized launch, Pennsylvania’s ambitious Rapid Bridge Replacement Program is well short of its goal to replace 558 structurally deficient bridges.
Caltrans has halted work on a $25-million I-5 bridge-replacement project, north of Redding, as it looks for the cause of a 1.5-in. lateral movement of the unfinished structure’s 400-ft-long arch.
The search for answers continues in the Jan. 15 collapse of a 1,500-ft-long cable-stayed bridge in a mountainous region of central Colombia, killing 10 construction workers and injuring several others.