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.
MassDOT Secretary Pollack Launches Youth Pass Pilot Program posted on Jul 1
MassDOT Secretary & CEO Stephanie Pollack launched a year-long pilot program that will provide MBTA monthly passes to up to 1,500 youth between the ages of 12 and 21 in the cities of Boston, Somerville, Chelsea and Malden. At Roxbury’s Dudley Station, Secretary Pollack was …Continue Reading MassDOT Secretary Pollack Launches Youth Pass Pilot Program
July 4th Holiday Services Update posted on Jun 30
MassDOT encourages safe travel during the upcoming July 4 holiday weekend. Before you drive, check our live Traffic Cameras web page to view current conditions. Traffic is especially heavy at the I-84 interchange at Exit 9 in Sturbridge on the day before the holiday and …Continue Reading July 4th Holiday Services Update
MassDOT Board Approves Contract for 325 New MBTA Buses posted on Jun 29
The MassDOT Board of Directors today approved a contract for the manufacture and delivery of 325 new state-of-the-art replacement buses for the MBTA fleet. “This is a major step in the process in modernizing the MBTA’s bus fleet and provides an important resource for millions …Continue Reading MassDOT Board Approves Contract for 325 New MBTA Buses