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Comm Ave Replacement

I-90 in Boston Reduced to Three Lanes in Each Direction, July 7 - August 28

I-90 (Mass Pike) was reduced from four lanes to three lanes in each direction in Boston between the Allston Interchange and the Beacon Street Overpass on July 7. The lane reductions were necessary to allow for logistical setups for the replacement of the Commonwealth Avenue Bridge over I-90. Crews are using the non-travel lanes areas to build a crane and place major equipment in the median of I-90.

Through August 28, lane reductions will be necessary and MassDOT will strive to make lane shift decisions in the best way possible to lessen the impact on drivers using the highway.

Stage 2 (2017 Construction Shutdown) Impact Schedule:

Street/Facility Temporary Impact Notes
The MBTA Green Line B branch (from Babcock Street to Blandford Street Stations) Closed from 9:00 PM on July 26 to 5:00 AM on August 14. Shuttle buses will run between Babcock Street and Blandford Street Stations. Accessibility for persons with disabilities will be provided at all points of the shuttle.
Commonwealth Avenue eastbound and westbound (between Brighton Avenue/Packard's Corner and Kenmore Square) Closed to through motor vehicles from 7:00 PM on July 27 to 5:00 AM on August 14. Two-way access will be maintained for local businesses and residents, MBTA buses, emergency services, pedestrians, and bicyclists. There will be no access for private vehicles between St. Paul and St. Marys Streets.
The Boston University (BU) Bridge Closed to motor vehicles from 7:00 PM on July 27 to 5:00 AM on August 14. Two-way access will be maintained for MBTA buses, emergency services, pedestrians, and bicyclists.
MBTA Bus Routes CT2 and 47 Detoured from normal routes from 7:00 PM on July 27 to 5:00 AM on August 14. See detour map on the Traffic Management page.
I-90 (Mass Pike) (between the Allston Interchange and the Beacon Street Overpass) Lane reductions and ramp closures from 9:00 PM on July 28 to 5:00 AM on August 7. Two lanes in each direction during peak period. The I-90 Eastbound on-ramp from Cambridge Street/Soldiers Field Road will be closed during this entire period. The I-90 Westbound Exit 20 off-ramp will be closed from 9:00 PM on August 1 (approx.) to 5:00 AM on August 7 (approx.)
MBTA Commuter Rail Framingham/Worcester Line Service impacts for two weekends: July 29-30 and August 5-6. Service will be maintained during weekdays. Shuttle bus service from Boston Landing to Reservoir Station (Yawkey Way during Sox games).
Amtrak’s Lakeshore Limited Line Service impacts for two weekends: July 29-30 and August 5-6. Shuttle bus service between Albany, NY and Boston.

Please view our Guide to Getting Around during the Shutdown.

Memorial Drive in Cambridge Open to Vehicles, July 30 & August 6

During the upcoming 2017 Construction Shutdown, Memorial Drive in Cambridge will be open for vehicular traffic on Sunday, July 30, and Sunday, August 6.

Detour Routes and Maps for 2017 Construction Shutdown:

Signs will be in place indicating all detour routes. Detour routes for car and truck traffic may vary and are indicated below.

Please review the detour route maps for more information. Detour routes for each map are explained below the map links.

Commonwealth Ave Closure Detour Map - Cars and Trucks

  • Through Vehicle Traffic Traveling East and West on Commonwealth Ave (7:00 PM on July 27 to 5:00 AM on August 14): Traveling east, Commonwealth Ave will be closed to through traffic east of Harvard Ave. Take a left at Harvard Ave, then a right onto Cambridge Street over the bridge towards Cambridge, taking an immediate right onto Memorial Drive/Route 3. Take a right onto Massachusetts Ave/Route 2A to return to Commonwealth Ave over the bridge. Traveling west, Commonwealth Ave will be closed to through traffic west of Brookline Ave. Veer left onto Beacon Street and take a right onto Harvard Street to return to Commonwealth Ave.
  • Truck Traffic Traveling East on Commonwealth Ave (7:00 PM on July 27 to 5:00 AM on August 14): Traveling east on Commonwealth Ave, take a left at Harvard Ave, then a right onto Cambridge Street over the bridge towards Cambridge, continuing onto River Street. Take a right onto Massachusetts Ave/Route 2A, continuing over the bridge, to return to Commonwealth Ave.
  • University Road Southbound Exit from Storrow Drive Closure (7:00 PM on July 27 to 5:00 AM on August 14): Traveling east on Storrow Drive, continue past the University Road exit to the Charlesgate West exit and take a right onto Beacon Street.
  • Carlton Street Closure (7:00 PM on July 27 to 5:00 AM on August 14): Traveling north on Park Drive, at the intersection of Mountfort Street and Carlton Street, continue straight on Lenox Street and take a right on Essex Street. Take a right back onto Mountfort Street.

Boston University (BU) Bridge Closure Detour Map - Cars and Trucks

  • Though Traffic Traveling North and South on BU Bridge (7:00 PM on July 27 to 5:00 AM on August 14): Traveling north on Park Drive, take a right onto Beacon Street and then a right onto Commonwealth Ave. Take a left onto Charlesgate West, then a left onto Storrow Drive westbound. Continue onto Soldier’s Field Road and exit onto Cambridge Street over the bridge, taking an immediate right onto Memorial Drive/Route 3 to continue towards Brookline Street. Traveling south on Brookline Street to destinations to the west, take a right onto Memorial Drive/Route 3 and take a left onto the Soldier’s Field Road Bridge, taking an immediate left to remain on Soldier’s Field Road eastbound. Take a right onto Cambridge Street and a left on Harvard Avenue to continue to Commonwealth Ave. Traveling south on Brookline Street to destinations to the east, take a left on Memorial Drive/Route 3, a right on Massachusetts Ave/Route 2A, and a right on Beacon Street to continue to Commonwealth Ave.
  • Truck Traffic Traveling North and South on BU Bridge (7:00 PM on July 27 to 5:00 AM on August 14): Traveling north on Park Drive, take a right onto Beacon Street and then a right onto Commonwealth Ave. Take a left onto Massachusetts Ave/Route 2A and continue into Cambridge. Traveling south on Brookline Street to destinations to the east, take a left on Waverly Street and continue onto Albany Street. Take a right at Massachusetts Ave/Route 2A to continue over the bridge into Boston.

I-90 (Mass Pike) Ramp Closures Detour Map

  • I-90 Eastbound On-Ramp from Cambridge Street Closure (9:00 PM on July 28 to 5:00 AM on August 7): To access I-90 eastbound from Cambridge Street/Soldier’s Field Road during the I-90 eastbound on-ramp closure, use the I-90 westbound on-ramp to continue onto I-90 westbound. Take Exit 16 (Route 16 West Newton/Wellesley) and follow signs to access I-90 eastbound.
  • I-90 Westbound Exit 20 Closure (9:00 PM on August 1 (approx.) to 5:00 AM on August 7): From I-90 westbound, continue to Exit 16 (Route 16 West Newton/Wellesley) and follow signs to access I-90 eastbound. Continue on I-90 eastbound to Exit 18 (Brighton/Cambridge) and use the eastbound off-ramp to exit onto Cambridge Street.

Boston University (BU) Bridge Closure Detour Map - MBTA Bus Routes 47 and CT2

  • Bus Routes 47 and CT2 will be detoured from the Boston University Bridge to Park Drive, following Commonwealth Avenue and St. Mary’s Street. See the MBTA Bus page for more details.

Bicycle Routes and Detours Map

  • Bicyclists will be routed to Amory Street and St. Mary's Street as an alternative to north-south bike travel between the BU Bridge and Mountfort Street/Essex Street.
  • Commonwealth Avenue will remain open for bicycles and pedestrians throughout the project on the westbound side.
  • For eastbound bicyclists heading to the BU Bridge, there will be a temporary crossing of Commonwealth Avenue at Amory Street where riders will continue onto the temporary eastbound bicycle lane. Bicyclists continuing eastbound past the BU Bridge will use a temporary crossing approximately 300’ east of Carlton Street to reenter the bicycle lane on Commonwealth Avenue eastbound.
  • There will be portions of the route near the work zone where cyclists will have to walk their bicycles.

Active Transportation Options

There will be pedestrian and bicycle wayfinding signage at all Green Line shuttle bus stops on Commonwealth Avenue to encourage active transportation, especially for short trips. This will help optimize shuttle bus operations by shortening bus wait times and headways.

See the Walk and Bike Times on Comm Ave Map

Additional Hubway Stations

MassDOT is partnering with Hubway to provide additional temporary Hubway stations on Commonwealth Avenue during the construction period at:

  • Babcock Street
  • Silber Way

Hubway Ambassadors will be assisting users at these temporary locations Monday through Friday from 7:00 AM – 10:00 AM and from 4:00 PM – 7:00 PM, providing additional bikes on a first-come, first-serve basis. All existing Hubway stations along Commonwealth Avenue and the rest of the Hubway service area will continue to be operational.

With Hubway's brand new mobile app, you can purchase your pass in advance so that you're ready to ride as soon as you get to a station:

  • Download the app here, available for iPhone and Android
  • Use the app to find a station near you
  • During the shutdown, get a single ride pass for only $1, or save $20 on a full annual membership!

For more information, visit thehubway.com/app, and download the new app today.

Traffic Resources

  • MassDOT/s GoTime mobile app contains work zone travel time information for numerous construction zones, including the one that will be in place on I-90 in Boston for this project. Travelers should download this tool from the Apple or Android app store and use it to make informed decisions before heading out onto the roadway.
  • MassRIDES - www.commute.com is MassDOT's program to improve your commute, be healthier, save money, and reduce your carbon footprint. Call 1.888.4COMMUTE, or visit MassRIDES on Facebook or Twitter
  • View a map of Park & Ride Lots throughout the Commonwealth.
  • Check out other MassDOT Traffic and Travel Resources
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