Major Traffic Delays Expected as $35.8 Million Bridge Replacement Project Closes Route 420

Traffic Restrictions

DELAWARE COUNTY, PA — The Pennsylvania Department of Transportation (PennDOT) has announced a significant closure on one of the county’s key routes set to cause major disruption and potential traffic chaos in the coming days.

Southbound Route 420 (Wanamaker Avenue) will be closed from 7:00 PM on Friday, February 2nd until 5:00 AM Monday, February 5th due to ongoing bridge construction activities. This is part of a substantial $35.8 million project to replace the bridges that carry this bustling highway over Darby Creek in Prospect Park Borough and Tinicum Township.

Motorists who usually travel on southbound Route 420 will need to reroute their journeys between 4th Avenue and Interstate 95. They will be directed to use U.S. 13, Stewart Avenue, and northbound I-95 to access Route 420.

Additionally, access to southbound Route 420 from Lazaretto Road will be prohibited for all motorists, who will have to follow the posted detour route. Lafayette Avenue at 2nd Avenue will also be off-limits for all vehicles except emergency ones seeking to access both northbound and southbound Route 420.

In the midst of this closure, northbound Route 420 will maintain two lanes of traffic between I-95 and 4th Avenue, but motorists should be prepared for an intermittent left lane closure as construction equipment is moved through the work area.

PennDOT has advised motorists to brace themselves for potential backups and delays near or through the work area, suggesting they allow extra time when traveling. This is an unfortunate consequence of the crucial bridge replacement project, which aims to ensure the safety and longevity of this key transportation artery in Delaware County.

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The closure and all scheduled activities are dependent on the weather, adding another level of uncertainty for motorists. As such, residents are urged to keep an eye on updates and plan their travel accordingly during this period.

Drivers can check current road conditions by visiting the MyChesCo Traffic Center. Stay updated on the latest news and information from MyChesCo with our free newsletter. Follow MyChesCo on Twitter at and like us on Facebook at

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