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.

The Massachusetts Bay Transportation Authority management board approved a $217.7 million contract to upgrade and modernize the signal systems on two MBTA subway lines.

Intensive construction to replace the westbound portion of the Boston's Commonwealth Avenue Bridge is scheduled from July 26 through Aug. 11.

A massive snowstorm dubbed the “bomb cyclone” broke Boston’s record for its highest tide ever recorded by the National Weather Service, but fully assessing the storm's damage will take weeks in a region that was plunged into frigid temperatures the day after the Jan. 4 storm.

The U.S. Dept. of Transportation on Dec. 21 granted the MBTA a $100-million installment of a $1-billion grant for the 4.7-mile light-rail line from Cambridge to Medford. 

Jacobs Engineering Group’s intended purchase of CH2M, announced on Aug. 2, has apparently cost the latter its $57-million construction-management contract for the Massachusetts Bay Transportation Authority’s Green Line extension.