Bridge Reconstruction
MBTA Ashmont - Alewife Red Line Over Clayton Street

Boston, Massachusetts
Bridge No. B-16-138 MP 157.00

Executive Summary:

Contract No. B00CN01 involves reconstruction of Clayton St. Bridge that carries the Ashmont-Alewife Red Line over Clayton Street. Barletta Heavy Division was the lowest responsible and eligible bidder with a contract bid sum not to exceed $5,476,700.00. The MassDot Secretary of Transportation approved Contract No. B00CN01 on January 24, 2013. NTP was issued on February 4, 2013.

Project Scope:

This project will replace the bridge superstructure, retrofit the existing abutments with tiebacks and micropiles, and reconstruct the roadway and sidewalks at the bridge site to increase the substandard vertical clearance to 14'-0" and improve pedestrian access with the elimination of existing steel bents located along the curb line. The work consists of removal of existing bridge superstructure and piers, modifications to existing abutments, construction of new superstructure, and all incidentals. Work includes but is not limited to Systems Relocation, Install temp. crossing for relocation of the MBTA system conduits, install and connecting systems cables through the new bridge, abutment tiebacks, install total of 8 abutment tiebacks for existing abutment, construct formliners for abutments, bridge demolition and replacement, reconstruct Clayton and Dickens Streets with sidewalk restoration work.

Project Schedule:

Notice To Proceed: February 2013
Substantial Completion: February 2014
Project Completion: April 2014

Project Update:

Notice to Proceed was issued on February 4, 2013. Contractor is preparing and processing the permits required to construct the temporary utility bridge along side the existing bridge. This work is anticipated to start in March 2013.