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.

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.

Bridging North America, a partnership of Fluor, ACS Infrastructure Canada and Aecon Group, reached financial close late last month to design, build, finance, operate and maintain the 1.5-mile-long Gordie Howe International Bridge Project for the Windsor-Detroit Bridge Authority under a 36-year, $4.4-billion concessionaire agreement.

Span's replacement team takes aim at hurdles

Pittsburgh’s Liberty Bridge will be fully completed in the new year.

Concern about old bridge joints delays opening of Mario M. Cuomo’s second span amid gubernatorial controversy