With tunneling on a new one-mile tube for the Chesapeake Bay Bridge-Tunnel set to begin next year, project officials are readying plans for handling an estimated 500,000 cu yd of potentially tainted spoil to be produced by a 42-ft-dia tunnel-boring machine, currently under construction in Germany.
An ongoing Boston Green Line track repair program has reduced derailments, but an aggressive maintenance program, improved safety standards and more investment are critical for avoiding more derailments and other system failures, according to a state transportation oversight report.