The line was first opened in 1859 as a horse car line operated by the Richmond and Schuylkill River Passenger Railway, and electrified in 1895, with extensions in 1902 and 1903.[8] Service was "bustituted" in 1992, along with Route 23 (Germantown Avenue-11th and 12th Streets) and Route 56 (Torresdale-Erie Avenues). On September 4, 2005, trolley service was restored.
On April 29, 2012, east of Frankford Avenue, the line started being operated by buses due to major reconstruction. West of Frankford Avenue, the line was still run by PCC II cars. Trolleys terminated at Frankford and Delaware Avenues (Northern Liberties Loop) while buses terminated at Girard Station under the Market-Frankford Line. As of January 2020[update], the full line is being substituted by a bus bridge to allow for rolling stock maintenance, track repairs, and a nearby highway expansion. Trolley service was originally anticipated to return in late 2021.[9] As of August 2023, six of the 18 cars were restored but still not enough to resume trolley service.[10] SEPTA expected trolleys would be in service in late 2023.[11] However, that goal was also not met. Trolleys finally returned to service on June 16, 2024.[12][2]
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