​Indiana, PA – The Pennsylvania Department of Transportation (PennDOT) is announcing an upcoming overnight detour, August 9 through 18, on Interstate 79 Northbound and Southbound in Muddy Creek Township, Butler County as crews demolish the existing Portersville Bridge.

Beginning at 8:00 PM on August 9, crews from J.F. Shea Construction, Inc. of Mt. Pleasant, PA, will be demolishing the second stage of the existing structure with work continuing overnight until 6:00 AM August 18.  Following the August 9-18 detour, two-lane traffic will be maintained throughout the project.

To detour, motorists travelling north on Interstate 79 should exit at the Exit 96 off-ramp and then get back onto Interstate 79 via the Northbound on-ramp.  Southbound, motorists should take Exit 99 to State Route 422 Westbound to State Route 19 Southbound to State Route 488 Eastbound to Interstate 79 Southbound.

Work is weather dependent. 

The anticipated completion date for this $6.3 million bridge replacement project is June 2024. The existing bridge will be replaced with a two-span, steel bridge.

Motorists can check conditions on more than 40,000 roadway miles by visiting www.511PA.com. 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 950 traffic cameras.

511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional Twitter alerts accessible on the 511PA website. Follow local PennDOT information on Twitter at www.twitter.com/511PAPittsburgh.

Subscribe to PennDOT news in in Armstrong, Butler, Clarion, Indiana, and Jefferson counties at www.penndot.pa.gov/District10. 

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