Overview
- The crash happened on Thursday, July 9, when Louisa Gag, 36, was struck and killed while cycling on Tremont Street near Parker Street as a Peterbilt 389 tractor-trailer and Gag were both traveling eastbound and the truck "made contact," police said.
- Boston police say the truck stopped after the crash but have not identified or charged the driver while the Suffolk District Attorney’s office leads an active, comprehensive investigation.
- Gag worked at the Boston Transportation Department and helped expand the Blue Bikes program after earlier work at the Livable Streets Alliance, and colleagues remember her as a leading advocate for safer streets.
- Advocates note that a 2023 City of Boston planning document flagged that stretch of Tremont as having poor biking conditions and that the painted bike lane narrows to a dotted line near a crosswalk, a design critics say raises crash risk.
- Hundreds attended vigils and thousands signed an open letter pressing Mayor Michelle Wu to unpause delayed safety projects and publish timelines for high-crash roads, a push that could force faster infrastructure decisions and public reporting.