Transit Projects

Rehabilitation of the Franklin Line over Guild Street

Executive Summary:

 

The Guild Street Bridge carries the Franklin Commuter Rail Line service over Guild Street in Norwood, MA. The project includes design/engineering services, and construction. HNTB Corporation was selected as the engineering firm responsible for design. Aetna Bridge Company is the selected contractor of the bridge construction.

 

before construction   East Elevation Present Day
East Elevation
 Before Construction
  East Elevation
Present Day


Project Scope:

 

The bridge over Guild Street, supported by granite block abutments, consisted of a riveted steel thru-girder superstructure constructed in 1896. The existing structure was approaching the end of its useful life and considered structurally obsolete due to the fatigue rating. The bridge superstructure was replaced under this project and construction is nearing completion. The new superstructure is a steel thru-girder system that was installed overnight April 22nd, utilizing accelerated bridge techniques by rolling it in place with a Self-Propelled Modular Transport System. Other activities that occurred during the weekend of April 22 was demolition of the existing bridge components and track, replacement of the bridge abutment caps and installation of the new track system over the bridge. Rehabilitation of the existing granite block abutment with geotechnical tieback anchor systems was also a part of this project.

 

Project Schedule (Anticipated):

Notice to Proceed (NTP) for construction was granted in April 2016 for $3,951,500.00.

Construction Substantial Completion is expected late June 2017

Construction Substantial Completion is scheduled for late August 2017

 

Project Update:

 

Construction has been ongoing since April 2016. Construction thus far has included replacement of the bridge superstructure, installation of soil anchors through existing granite block abutments along with reinforced walls placed in front of existing abutments. The new steel through girder superstructure was assembled on an adjacent staging site and successfully rolled into place the third week of April utilizing accelerated bridge construction techniques.

Construction activities for the remaining months will focus on replacement of the existing roadway drainage system, installation of new sidewalks below the bridge, installation of roadway lights at the bridge, and repointing of the adjacent masonry walls.  The contractor will be closing Guild Street access under the bridge periodically for completion of this work.