The 300 block of East Walnut Street is expected to remain closed for two to three hours as crews repair a sewer line.
Initial reports that the street closure was the result of a truck stuck in a sinkhole were incorrect.
Charlotte Katzenmoyer, the city’s director of public works, said crews are repairing a partial collapse of a 10-foot section of brick sewer line. The line is about 10 feet below the road surface.
Katzenmoyer said the issue was discovered by UGI crews who have been working in the area.
Westbound traffic is being diverted at Plum Street, police said. Commercial vehicles must turn south on Plum.
Road construction has been ongoing in that block of Walnut Street.