Skip to Content
Streetsblog Massachusetts home
Streetsblog Massachusetts home
Log In
Bus lanes

Cambridge, Watertown Declare Success for Mount Auburn Bus Lanes

An MBTA Route 73 bus travels along Mount Auburn Street in Cambridge during the “pilot” phase of bus priority measures in fall 2018. Photo courtesy of Ad Hoc Industries via BostonBRT.

The "pilot" phase for the new Mount Auburn bus lanes in Cambridge and Watertown is over, and the two municipalities are making the new bus lanes and transit-priority traffic signals a permanent amenity for riders of the 71 and 73 MBTA's "trackless trolley" bus routes.

"Based on the results of the evaluation and the extensive feedback we have received, the City of Cambridge and the Town of Watertown will make the changes to Mount Auburn Street more permanent in the next few months," wrote Cambridge transportation planner Tegin Teich in an email to stakeholders.

The pilot project brought several upgrades of Mount Auburn Street near the Mount Auburn Cemetery, where the MBTA's 71 and 73 bus routes converge on their way to and from Harvard Square. During morning rush hours, buses move more people along this segment than private automobiles, even though buses constitute about 2 percent of the vehicles on the roadway.

A diagram of bus route improvements along Mount Auburn Street in Cambridge and Watertown. Courtesy of the City of Cambridge.
A diagram of bus route improvements along Mount Auburn Street in Cambridge and Watertown implemented in the fall of 2018. Courtesy of the City of Cambridge.
A diagram of bus route improvements along Mount Auburn Street in Cambridge and Watertown. Courtesy of the City of Cambridge.

A spring 2019 evaluation of the new bus lanes found that bus riders were saving 4 to 5 minutes on an average trip during the morning rush hour, contributing to an estimated 36,000 hours in cumulative time savings for bus riders over the course of a year. The project has also improved the reliability and on-time performance for the 71 and 73 bus routes.

Stay in touch

Sign up for our free newsletter

More from Streetsblog Massachusetts

New Trails to Look Forward To In 2026

Massachusetts opened over 40 miles' worth of new off-street trails in 2025, and more than a dozen new projects are expected to break ground in 2026.

December 23, 2025

Should the Orange Line to Roslindale Be The T’s Next Rapid Transit Expansion?

New housing, crowded buses, and underutilized commuter rail tracks help make the case to expand the Orange Line beyond Forest Hills, advocates argue.

December 19, 2025

More Buses to the Berkshires Coming In 2026

Link413, a partnership between three regional transit authorities, will introduce three longer-distance bus routes to connect North Adams, Pittsfield, Greenfield, and Northampton.

December 17, 2025

The Wrong Kind of Legacy: Old Red Line Trains Find It’s Getting Harder to Get Through Harvard

Riders should expect more delays today while track inspections limit Red Line traffic to a single track near Harvard.

December 16, 2025
See all posts