Some streets west of City Hall will be subject to closures for most of Sunday so a helicopter can deliver heavy equipment to a Center City building.
The intermittent closures, which will affect vehicles and pedestrians, are expected to occur between 4 a.m. and 3 p.m., the Streets Department said.
SEPTA will be affected by the operation, and the agency has issued an advisory for riders in Center City.
The airlift is part of a project to replace HVAC equipment at 2000 Market St., Crystal Jacobs, a Streets Department spokesperson, said.
“Due to the height of these buildings, a helicopter is needed to set these units,” the department said in a statement.
“The lift has been scheduled for a Sunday to minimize disruption to residents and businesses,” the statement said. “Police assistance will be on hand to ensure the safety of motorists, pedestrians, and work crews for the duration of all closures. Access for emergency vehicles will be maintained.”
The affected streets are:
SEPTA said the airlift would affect subway, trolley, Regional Rail, and bus operations: