During construction, schedule to tast till June 2014, the speed limit will be just 35 miles per hour.
A series of nighttime closures began last week to put the concrete barriers in place.
Sometimes, if needed, even the single lanes might be closed between midnight and 5 a.m.
The closures are part of a $43 million project to make needed repairs to the 61-year-old span, originally called the Penrose Avenue Bridge.
Besides painting, the work includes "rehabilitating and resurfacing the center truss spans; resurfacing the concrete approach spans; repairing structural steel; replacing expansion joints; repairing concrete piers; replacing guide rail; and replacing damaged pedestrian railings," according to PennDot.
Pedestrians can continue to use the bridge throughout the project.
Eighty percent of the funding comes from the federal government, the rest from the state.
To check traffic conditions, go to http://go.philly.com/traffic or www.511pa.com. Call 511 to check highway conditions.
Contact staff writer Peter Mucha at 215-854-4342 or email@example.com.