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.
Plan Ahead for Holiday Weekend Travel posted on Sep 1
MassDOT encourages motorists to plan ahead for safe travel during the upcoming Labor Day holiday weekend. Heaviest Labor Day traffic on I-90 is expected Thursday and Friday westbound and Monday afternoon-evening eastbound. Based on the number of toll transactions on the Turnpike from Weston to …Continue Reading Plan Ahead for Holiday Weekend Travel
Safe Streets Smart Trips High School Video Contest Reminder! posted on Aug 31
Calling All Massachusetts High School Students! MassDOT announces the second annual Safe Streets Smart Trips Statewide High School Video Contest. The contest serves as an initiative within the Massachusetts Strategic Highway Safety Plan (SHSP) to promote safe walking, bicycling, and driving behaviors within the Commonwealth. …Continue Reading Safe Streets Smart Trips High School Video Contest Reminder!
Concord: New MBTA Commuter Rail Bridge to Roll into Place This Weekend posted on Aug 28
As part of the ongoing rehabilitation of the Fitchburg Commuter Rail Line, the MBTA is replacing the old railroad bridge over Route 62/Main Street in Concord with a new bridge to be rolled into place Saturday, August 29. The current bridge has low clearance and …Continue Reading Concord: New MBTA Commuter Rail Bridge to Roll into Place This Weekend