SEPTA M Line Bridge Work Secures Future Service
SEPTA replaces M line trains with buses for year as $55M viaduct rehabilitation begins
SEPTA M Line Buses Replace Trains for Bridge Work
SEPTA's M line riders between Bridgeport Station and Norristown Transit Center will need to take buses instead of trains for the next year. Starting Sunday, bus service replaces trains on this section until May 9, 2026, as crews undertake a $55 million rehabilitation of the 113-year-old Bridgeport viaduct spanning the Schuylkill River. The bridge hasn't seen major work since 1985, officials said.
Century-Old Bridge Needs Major Repairs
The Bridgeport viaduct was originally built in 1911 and has carried trains on what's now called the M line—formerly the Norristown High Speed Line—for more than a century. The structure's age and decades of continuous use have made comprehensive rehabilitation necessary to ensure continued safe operation. Scott Sauer, SEPTA General Manager, said crews will inspect every component of the bridge to ensure safety and longevity. The project represents a significant investment in maintaining Montgomery County's public transit infrastructure.
Project Includes Structural Steel and Deck Work
The $55 million rehabilitation includes structural steel repairs, complete replacement of the concrete deck, and replacement of the maintenance catwalk that runs alongside the bridge. Workers will also make other necessary repairs identified during inspections and apply a fresh coat of paint to the viaduct. The scope of work requires closing the bridge to train traffic for the duration of construction. Officials said the comprehensive approach will extend the bridge's service life for decades to come.
Year-Long Construction Timeline Set
The entire rehabilitation project is expected to take approximately one year to complete, with bus service continuing through May 9, 2026. Officials said the extended timeline reflects the complexity of repairing a century-old structure while maintaining safety standards. SEPTA hasn't provided specific milestones for when different phases of work will be completed, but the agency said it'll monitor progress throughout the construction period.
Riders Face Extended Service Changes
During the bus replacement period, riders traveling between Bridgeport Station and Norristown Transit Center should expect longer travel times compared to train service. The service changes affect the western portion of the M line in Montgomery County. Riders can check Moovit for real-time bus schedules and alternative routing options during the year-long construction project. Officials said the temporary inconvenience will result in a safer, more reliable bridge for future generations of transit riders.
