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.
Longfellow Bridge Closure, MBTA Red Line Diversion July 8-11 posted on Jun 28
MassDOT’s contractor will close the Longfellow Bridge and implement an MBTA Red Line diversion during the weekend of July 8 through July 10. The Longfellow Bridge will be closed to all vehicular traffic, except MBTA buses, from 11:00 PM on Friday, July 8, to 5:00 …Continue Reading Longfellow Bridge Closure, MBTA Red Line Diversion July 8-11
Boston: I-90 Eastbound 4th Lane Reopens at Commonwealth Avenue Bridge posted on Jun 26
MassDOT today announced the restoration of a fourth lane on I-90 Eastbound from the Commonwealth Avenue bridge to the Prudential Tunnel in Boston. The restoration of four travel lanes comes after MassDOT completed safety upgrades by replacing the median system with a new jersey barrier …Continue Reading Boston: I-90 Eastbound 4th Lane Reopens at Commonwealth Avenue Bridge
RMV: 2016 Low Number Plate Lottery Applications Now Accepted posted on Jun 25
MassDOT Registrar of Motor Vehicles Erin Deveney announced that applications for the 2016 Low Number Plate Lottery are now being accepted online or by U.S. mail. Starting this year, for the first time ever, customers will be able to enter the lottery online by visiting: …Continue Reading RMV: 2016 Low Number Plate Lottery Applications Now Accepted