PHILADELPHIA (CBS) – SEPTA says an early-morning transformer fire at its underground substation near 33rd and Market Streets was affecting some SEPTA commuters this morning who use the subway-surface trolleys.

By 3 PM Tuesday afternoon, SEPTA said only one line — the Route 10 trolley — was still using shuttle buses
Routes 11, 13, 15, 34, and 36 had all resumed normal trolley operations, following earlier disruptions and shuttle busing due to power problems.

Service on the Route 10 trolley was expected to continue with buses and Market-Frankford Line trains through the end of service today. Buses are operating along the Route 10 between 63rd & Malvern and 40th Street, with the Market-Frankford Line providing travel to and from center city.

For SEPTA updates, click here.

When the fire broke out around 2 AM Tuesday morning, one SEPTA maintenance worker suffered minor burn injuries to his arm. He was treated at a local hospital.

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Reported by Al Novack, KYW Newsradio 1060