SEPTA begins rehabilitation of Bridgeport viaduct, M light rail line
Image credit: SEPTA
The Southeastern Pennsylvania Transportation Authority (SEPTA) is delivering a $55 million rehabilitation project on the Bridgeport viaduct, a 3,525-foot-long bridge that carries the M Line light rail service across the Schuylkill River. The M Line is also called the Norristown High Speed Line.
M Line trains cross the bridge nearly 1,900 times a weekday, representing more than a third of the line's total weekday trips. Built in 1911, the viaduct requires major structural repairs to extend its service life.
Third-party contractor J.D. Eckman will complete structural steel repairs, concrete repairs to abutments and piers, bearing replacement, concrete deck replacement, maintenance catwalk replacement, Norristown Transit Center stairway replacement and repainting the entire structure.
Construction will take about a year to complete and will be delivered in three phases to avoid service outage this summer, when Philadelphia will host FIFA World Cup matches, the Major League Baseball's All-Star game and the nation's 250th birthday celebration. The second phase of the project started in July 2026 and the third phase will start in January 2027.
Source: SEPTA
