USA: SEPTA shuttle buses began replacing trains on three Philadelphia-area rail lines on Aug. 1, with bridge projects causing service changes lasting from two weeks to nearly five months.

Two SEPTA N-5 railcars crossing the Bridgeport-Norristown Viaduct over the Schuylkill River.
An N-5 train crosses the Bridgeport-Norristown Viaduct in June 2012; illustrative image, not the 2026 works. Cropped and converted to WebP. Photo: Montgomery County Planning Commission, CC BY-SA 2.0.

M Line buses will run through Dec. 19

Under SEPTA’s current service plan, M Line passengers are using shuttle buses between Norristown Transit Center and Bridgeport Station through Dec. 19. The bus segment will extend farther south to Gulph Mills Station from Aug. 22 to 30, then return to Bridgeport for the rest of this construction phase.

The same project will affect the Manayunk/Norristown Regional Rail Line from Aug. 15 to 23. During that period, buses will replace trains between Norristown–Elm Street and Norristown Transit Center. SEPTA has not specified the extra journey time for these two substitutions, but it has advised passengers to allow more time.

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$55 million viaduct project drives the disruption

The M Line changes support the second and longest phase of the Bridgeport Viaduct rehabilitation. The 3,525-foot bridge over the Schuylkill River was built in 1911 and carries nearly 1,900 of the line’s 5,600 weekday passenger trips.

SEPTA estimates the project at $55 million, including design, support and construction. Contractor J.D. Eckman’s scope covers structural steel and concrete repairs, replacement of bearings, the concrete deck and the maintenance catwalk, repainting of the structure, and replacement of the Norristown Transit Center stairway.

SEPTA says this is the second and longest planned construction phase, with a third and final phase expected in early 2027.

West Trenton passengers face a shorter change

Separate work on the West Trenton Bridge is sending passengers to shuttle buses between Yardley and West Trenton stations from Aug. 1 to 14. Those buses are scheduled to leave 14–20 minutes earlier than the normal train times and may add up to 30 minutes to a trip.

Passengers should check SEPTA schedules, real-time updates and trip-planning information before travelling because the replacement-bus arrangements vary by line and date.

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