Route 9 and Cedar Street were quietly reopened to traffic on Monday morning, almost twelve hours before they were scheduled to be open. A few onlookers watched as some of the first cars travelled under Route 9, and a few drivers sounded their horns and waved appreciatively at the workers. Onlookers stopped by the site throughout the weekend to watch the work rapidly progress. Over a hundred people stood by as the bridge moved—ahead of schedule— down Route 9.
The secret to the incredibly fast bridge replacement was the strategy used by MassDOT and its engineers and builders, which was aimed firmly on a single goal: to provide the best possible customer service to road users and the community by building a long-lasting bridge, safely, efficiently, economically, and with the least possible impact to traffic and the community. To accomplish that, MassDOT pre-constructed the replacement bridge superstructure in a cloverleaf near the old bridge. Doing so kept a vast majority of the work outside of the roadway, nearly eliminating traffic impacts to Route 9.
As shown in the short movie below, once the new bridge superstructure was ready, MassDOT needed to demolish the old bridge and install new portions of the center pier and abutments. On Sunday morning, all preparations were complete. At 5:00 AM, four multi-axle machines called Self-Propelled Modular Transporters (or SPMTs) rumbled to life from their position underneath the new bridge superstructure. They moved in unison, carrying the 530-ton bridge from the cloverleaf onto the Cedar Street ramp. Then, at 8:15, the SPMTs’ many wheels rotated 90 degrees, and the bridge moved smoothly down the ramp onto Route 9 as the crowd watched, amazed. The wheels rotated again, and the bridge moved down Route 9, arriving at the pier and abutments at 9:30. The SPMTs held the bridge above the substructure until the early afternoon, when it was lowered into place.
Crews worked throughout the night to prepare to reopen the bridge. Temporary lane markings are in place and one sidewalk is open for pedestrians. Crews will continue to put the finishing touches on the bridge throughout the month, during off-peak hours. This work includes installing architectural pilasters, final paving and lane marking, completion of sidewalks, and installing signs.
A First in the State: MassDOT Uses New Construction Technique on Route 2/I-95 Project posted on Aug 28
From smaller projects to the largest, MassDOT uses the latest, proven innovative techniques. For the first time in the state, MassDOT is using precast, modular concrete abutments on the Route 2/I-95 Bridge Replacement Project. Accelerated Bridge Construction technologies, such as this one, reduce project duration …Continue Reading A First in the State: MassDOT Uses New Construction Technique on Route 2/I-95 Project
Route 107 Corridor Public Meetings Scheduled posted on Aug 26
Public Information Meetings for the Route 107 Corridor Study have been scheduled as follows: Wednesday, September 7, 6:00 PM to 8:00 PM, Lynn English High School, Auditorium, 50 Goodridge Street Tuesday, September 13, 6:00 PM to 8:00 PM, Collins Middle School, Auditorium, 29 Highland Avenue, …Continue Reading Route 107 Corridor Public Meetings Scheduled
Gill-Montague Bridge Rehabilitation Celebrated posted on Aug 25
MassDOT Secretary and CEO Stephanie Pollack and Highway Administrator Thomas J. Tinlin joined Director of Governor Charlie Baker’s Western Massachusetts Office Michael Knapik, Senate President Stanley C. Rosenberg, state and local officials today in Turners Falls to celebrate the complete rehabilitation of the Avenue A …Continue Reading Gill-Montague Bridge Rehabilitation Celebrated