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.
Secretary Pollack Welcomes July COMTO National Meeting to Boston posted on May 27
MassDOT Secretary & CEO Stephanie Pollack is pleased to welcome the Conference Of Minority Transportation Officials (COMTO) 44th National Meeting & Training Conference to Boston, July 11–14, 2015. Secretary Pollack joins Boston Mayor Martin J. Walsh as Honorary Chairs of the Conference. In addition to …Continue Reading Secretary Pollack Welcomes July COMTO National Meeting to Boston
Fall River Route 79 Project: Ramp Closures May 28 posted on May 26
MassDOT will close the on-ramps to I-195 east and westbound from Route 79/138 and Broadway northbound, and from Central Street at Durfee Street/Milliken Boulevard on Thursday, May 28. The closures are necessary to demolish and reconstruct the last two elevated bridges as part of the …Continue Reading Fall River Route 79 Project: Ramp Closures May 28
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