Construction look-ahead: May 24 – June 23, 2026
This is a brief overview of construction operations and impacts for the Allston Preservation Project. MassDOT will provide additional notices as needed for high-impact work and changes to traffic configurations beyond those described below.
Current construction status
On the I-90 Viaduct in Allston, the contractor continues with repairs to concrete barriers and median, roadway expansion joints, structural steel, and cleaning and painting of the steel bridge structure. Additionally, the contractor has started with lighting upgrades on I-90 eastbound and westbound, and associated ramps.
On Cambridge Street over I-90, the contractor continues with concrete substructure repair work, installation of bridge shielding and bridge brackets. Cleaning and priming activities have been completed. The demolition of the old outbound (west) sidewalk may begin within the next few weeks, subject to special event schedules this summer.
Travel impacts
During June and July, there may be delays in work schedules and fewer scheduled lane closures and/or increased levels of traffic due to FIFA activities, the Fourth of July, and Sail Boston.
Drivers should still expect lane closures on I-90 eastbound and westbound, on-ramps and off-ramps to and from I-90 eastbound and westbound, and on Cambridge Street as required.
Pedestrian and bicycle access will be maintained throughout construction.
Scheduled work
I-90 Viaduct
Work within the project area around the bridge carrying I-90 over MBTA will entail:
- Concrete repairs at median and parapets.
- Expansion joint repairs including forming, demolition and concrete placement.
- Structural steel and bearing repairs.
- Cleaning and painting structural steel.
- Upgrade to existing lighting system to increase lighting levels.
Cambridge Street over I-90
Work within the project area carrying Cambridge Street over I-90 will entail:
- Concrete substructure repair work.
- Cleaning and priming selected areas of existing steel bridge structure.
- Removal of existing shielding and installation of new shielding.
- Installation of bridge brackets and walkway for new sidewalk construction.
- Removal of existing fence and railing from outbound sidewalk.
- Demolition of old outbound sidewalk.
Work hours
Daytime Hours: Monday through Friday from 6:00 a.m. to 6:00 p.m.
Nighttime hours: Monday through Saturday from 9:00 p.m. to 6:00 a.m. as required
Note that Federal holidays including Independence Day may impact typical work schedules.
Travel tips
Drivers should pay attention to all signage and move carefully through the work zone. Police details, lane markings, temporary barriers, traffic cones, signage, and other tools will be used to control traffic and maintain safe work zones.