A violent early-morning crash mangled two cars, shut down Alewife Brook Parkway in Cambridge, and left both drivers with life-threatening injuries, authorities said. Emergency crews raced to the stretch near Matignon Road just before 5 a.m., where debris and crumpled metal covered the roadway. The parkway was closed in both directions, turning a key route into Cambridge into a backup zone as the morning commute ramped up. Officials urged drivers to steer clear while investigators and cleanup crews moved in.
The Cambridge Fire Department said the wreck happened in the Matignon Road area shortly before 5 a.m., and video from the scene showed one car with its roof torn off and heavy front-end damage to a second vehicle, according to Boston 25 News. Massachusetts State Police told that station both drivers had life-threatening injuries, and MassDOT reported that the parkway was shut in both directions between Massachusetts Avenue and Broadway.
Scene and traffic impacts
Photos from the aftermath showed extensive damage to both vehicles, and investigators said at least one car appeared to have left the roadway and struck a tree, NBC Boston reported. With debris scattered across the pavement, tow trucks and crash investigators stayed on scene through the morning, stretching out delays for drivers heading into and out of Cambridge.
State police lead response
Massachusetts State Police are handling the investigation because Alewife Brook Parkway is a state-owned road, and the city's 2025 bike-safety report notes that troopers respond to incidents on state roads such as Alewife Brook Parkway. That split in jurisdiction means Cambridge police typically do not lead crash probes on parkways under state control, while MassDOT takes the lead on clearing wreckage and managing traffic, according to the report.
Why the Alewife area matters
Alewife has been no stranger to high-profile infrastructure issues and serious crashes in recent years. Boston.com reported that a 2023 crash damaged the MBTA's Alewife garage and triggered more than $1 million in repairs, and long-running redevelopment plans for the area remain unresolved, keeping the tangle of transit, traffic, and safety in the spotlight. Alewife Brook Parkway serves as a major commuter funnel linking Route 2 to the Red Line and nearby commercial zones, so a closure here sends shockwaves through the broader morning rush.
Massachusetts State Police said the investigation remains ongoing and that authorities have released few additional details, according to Boston 25 News. Officials have not yet identified the drivers or disclosed what they believe caused the collision.
