SEPTA's Center City trolley tunnel to be closed this weekend

SEPTA's trolley tunnel in Center City will be closed for maintenance this weekend.

The closure means riders on trolley routes 10, 11, 13, 34 and 36 will need to use the Market-Frankford Line to travel into and out of Center City between 13th and 40th Streets.

The tunnel will be closed from 10 p.m. Friday until 5 a.m. Monday.

SEPTA usually closes the tunnel for an about 10-day stretch each summer for repairs, but this year's maintenance blitz was adjusted after cracks in the transit agency's newest railcars crippled Regional Rail service.