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.

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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.

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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