The portion of the Schuylkill River Trail between Race Street and JFK Boulevard will be indefinitely closed because of a large sinkhole that has formed under the surface.

The Schuylkill River Development Corporation, the nonprofit that oversees the management of the corridor in partnership with the city, is working alongside Philadelphia's Parks & Recreation Department and Water Department to conduct emergency repairs.

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SRDC President Joseph Syrnick said a trail user notified the organization about the crater late last week. When engineers visited the site, they discovered a sinkhole roughly 8 feet deep, 8 feet wide and 10 feet long — most of it concealed by asphalt. So far, it'

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