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.

A team of Granite and Boh Bros. scored highest on the first phase of the competition.

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.

Chinese contractors take the plunge into prefab and BIM for island-hopping roadway

Harsh environment puts team to the test on Champlain Bridge