State Police report that Joseph A. Santo, 19, of Somerville, was transported to Mass. General with serious injuries following the collision around 12:30 a.m. at Rte. 16 and Broadway.
A 2006 Hyundai Elantra struck the bicycle in the right lane of Route 16 eastbound.
The State Police investigation determined that the driver of the Elantra, a 46-year-old Medford man, did not contribute to causing the crash. The Elantra's driver, who is not being identified, was not injured. The Elantra was towed from the scene.