A new bridge connecting Portsmouth, N.H., and Kittery, Maine, features what engineers believe is the first-ever use of precast-concrete segmental towers on a vertical-lift bridge. The $158.5-million ...
A horizontally curved, precast- concrete, trapezoidal type of box-girder design that shaved some $9 million off an interchange project in Orlando, Fla., is attracting growing interest from the bridge ...