The project used accelerated bridge construction techniques to replace the structurally deficient bridge that carries Bay Street over the Mill River. MassDOT contractors cast prefabricated bridge units made of steel and concrete and erected them by crane in just half of one day. The bridge also uses secant piles- piles that join together making a structural wall.
The new, wider bridge is located just south of Lake Sabbatia, which could provide spawning and nursing habitat for a large population of Alewives, Blueback Herring and American Eels. The aged Morey’s dam, located almost underneath the bridge, did not allow fish passage. The project replaces the dam and the new dam includes an eel ramp and fish ladder.
MassDOT designed the bridge, dam, and fish ladder and eel ramp, seen at left, in partnership with the Department of Conservation and Recreation, Massachusetts Department of Environmental Protection, and Massachusetts Division of Marine Fisheries. MassDOT’s award-winning Design Manual requires context-sensitive design on all projects.
Brad Chase of Massachusetts Division of Marine Fisheries says the project “provided a unique opportunity to improve infrastructure and natural resources” and “a chance to create a large new fish population— we’re really excited.”
MassDOT District 5 staff, including Nick Adams, Eric Borman, Mike Deverix, Gary Dixon, and Mike Martin are making sure the project is built to specifications, on-time and on-budget.
Brad Chase and his colleagues at the Division of Marine Fisheries will monitor fish passage using one of the first video counting systems to be installed in Massachusetts. A population of alewives and blueback herring could return in as little as three years following removal of downstream dams.
The bridge is expected to reopen to traffic by the end of December.
MassDOT, Mapfre Insurance Encourage Safe Summer Driving posted on May 24
In time for Memorial Day, the kick-off to the summer driving season, MassDOT Acting Highway Administrator Thomas Tinlin joined MAPFRE Insurance in reminding motorists to adhere to speed limits, obey traffic laws and avoid distracted driving when traveling during the summer months. According to data …Continue Reading MassDOT, Mapfre Insurance Encourage Safe Summer Driving
Chelsea: Silver Line Gateway Project Bridge Closure posted on May 22
MassDOT will close the Washington Avenue Bridge in Chelsea on Tuesday, May 26 at 10:00 AM as part of the Silver Line Gateway Project. Appropriate detour signs will be in place to redirect traffic and pedestrians, and identify relocated bus stops. The bridge closure is …Continue Reading Chelsea: Silver Line Gateway Project Bridge Closure
MBTA: Refurbished Green Line Trolleys Returning to Service posted on May 22
The first MBTA Green Line refurbished trolley car was returned to service this week. T personnel are completing test runs on the next refurbished car to return to service in the coming days. These are the first of 86 that are being refurbished. All 86 …Continue Reading MBTA: Refurbished Green Line Trolleys Returning to Service