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Dorchester Avenue Bridge Replacement

Construction scaffolding along a bridge undergoing renovations

We began construction in summer 2022 to prepare for the full replacement of the Dorchester Avenue Bridge in summer 2024. The steel bridge, which is located between Von Hillern and Kemp Streets, carries vehicles, pedestrians, and bicyclists over the Red Line, the Commuter Rail Old Colony Lines, and the Cabot Yard maintenance tracks.

Originally built in 1925 and last rehabilitated in 1975, the bridge will be replaced to protect its structural integrity and ensure reliable service.

The project will also include the rehabilitation of the Von Hillern Street retaining wall to maintain its structural integrity.

  • Contract awarded: November 2022
  • Construction schedule:
    • Fall 2022 – Winter 2023: Retaining wall rehabilitation, utility relocation, tunnel concrete repairs
    • Spring 2024 – Summer 2024: Bridge superstructure replacement
    • Fall 2024: Bridge will reopen to traffic
  • Projected completion: Late 2024
  • Budget: Estimated $34.5 million
  • Status: In progress

Building a Better T

As part of our $9.6 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

What to Expect During Construction

Service impacts

Scheduled work will impact Red Line and Commuter Rail service on select weekends.

Neighborhood impacts

The Dorchester Avenue Bridge closure has been extended through the Fall of 2024, due to construction scheduling conflicts and necessary utility work. However, the bridge will be partially reopened in July of 2023 for pedestrians only. 

The demolition of the bridge is currently planned for Spring 2024.

At this time, vehicles will remain unable to cross the bridge. See the vehicle detour map below.

Neighbors can expect increased construction noise from heavy equipment and machinery. We appreciate your patience and consideration while we work to complete this critical safety project.

Learn more about the current road closure

map of detour for Dorchester Ave Bridge closure
This map includes a detour onto I-93 for heavy vehicle traffic, and a surface-road detour for local vehicle traffic—both will be in use during the 2023 summer construction seasons
Detour map for pedestrians for Dorchester Ave Bridge closure
These pedestrian and bike detour routes will be in use during the 2023 summer construction season while the Dorchester Avenue Bridge is being repaired 

May 2022 Preconstruction Update

Past Events

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Contact Information

If you have any questions or would like to sign up for project updates, please contact DotAveBridge@mbta.com.

Recent Updates

View all project updates

Building a Better T

As part of our $9.6 billion, 5-year capital investment plan, we're renovating stations, modernizing fare collection systems, upgrading services for our buses, subways, and ferries, and improving the accessibility of the entire system.

Learn more

Recent Updates

View all project updates