SEPTA will reroute a portion of the Route 15 trolley line in Fishtown and North Philadelphia to accommodate massive highway reconstruction, starting next spring.

Route 15, which runs along Girard Avenue and Richmond Street, will use buses instead of trolleys for the three miles from Girard and Front Street to Richmond and Westmoreland Street.

Trolley service will be rerouted from Girard along Frankford Avenue to Delaware Avenue, where a turnaround will be built across the street from the new Sugar House casino. New trolley tracks will be installed in several months to accommodate the rerouting.

The shift will be in place for about two years, during a massive reconstruction by PennDOT of the nearby I-95 ramps and adjacent roads. The change will affect about one-fourth of the length of Route 15 and about 12 percent of its ridership, said Steve D'Antonio, manager of city service planning for SEPTA.

- Paul Nussbaum