Driver Kills Bicyclist on Tremont Street In Mission Hill
A driver struck and killed Louisa Gag, a prominent street safety advocate, while she was riding a bicycle on Tremont Street in Mission Hill this morning.
Police dispatchers reported a fatal crash where the victim was immediately pronounced dead on the scene around 8:20 a.m. Family members identified the victim as Gag later that afternoon.
A bystander photo provided by a Reddit user (above) and footage from local TV news stations indicate that the crash occurred on the southbound side of Tremont Street near the intersection of Parker Street, a signalized intersection located one block north of the Roxbury Crossing Orange Line station.
Boston Police told StreetsblogMASS that the homicide remains under investigation and that they have made no arrests.
Tremont Street in this area features two lanes for moving vehicle traffic, two unprotected paint-only bike lanes, and two lanes of on-street parking.
The site of Thursday morning’s homicide is located only two blocks away from the intersection of Tremont Street and Malcolm X Boulevard, where another driver struck and killed Diva Helena Pina de Carvalhoa, in December 2024.
In addition to that homicide, MassDOT’s crash database records an additional 20 injury-causing crashes that have occurred on the half-mile segment of Tremont Street from Roxbury Crossing to Brigham Circle since the beginning of 2022.
The City of Boston and the MBTA had been planning to make a nearby segment of Tremont Street, south of Roxbury Crossing, considerably narrower with a new center-running busway on Tremont and Columbus Avenues.
The scope of that project would have included some traffic-calming improvements to the segment of Tremont Street outside the Roxbury Crossing MBTA station, just one block away from Thursday morning’s homicide scene.
Earlier this year, just days before the project was due to go out to bid for construction, Boston’s Acting Chief of Streets, Nick Gove, issued a memorandum to the MBTA requesting major design changes to the project – effectively delaying the work indefinitely.
This story was updated at 6 a.m. on Friday July 10 to add information about the victim’s identity as well as information from the Boston Police Department.
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