Demolition on the first of three Somerville bridges being rebuilt for the Massachusetts Bay Transportation Authority’s $2.3-billion Green Line Extension was slated to begin March 23.
In late 2016, Long Beach, Calif., began to consider building a new pedestrian bridge to connect its convention and performing arts centers.The original idea was to have a traditional concrete, elevated sidewalk between the two structures, spanning about 600 ft.
Fiber-reinforced polymer composites, high-performance concrete and other innovative materials and technologies appear to be fulfilling their promise to reduce infrastructure maintenance and life-cycle costs, and cut construction time, according to a recently released Transportation Research Board consensus study.
The distinctive 800-ft-long, 164-ft-tall “basket handle” true arches of the new Interstate 74 Mississippi River Bridge have yet to rise, but the $1.2-billion project connecting Moline, Ill., and Bettendorf, Iowa, has made significant progress since construction began in July 2017.