Districtwide Landslide Mitigation Efforts
Landslides are an ongoing problem within District 11. In 2020, the Department addresses a total of 48 slide locations within Allegheny and Beaver Counties. Slide mitigation work is resolved in several different ways. Contractors addressed 23 slides in Allegheny County last year. Some were stand-alone projects, some were handled through our Geotechnical contract, while others were completed as part of a group repaving job. PennDOT department forces were able to mitigate 25 slides in Allegheny and Beaver. Our landslide crew addressed 21 slides while other maintenance forces resolved four slides using the innovated sheet pile method. Lime Hollow Road in Penn Hills is a perfect example of the challenges faced while undertaking slide mitigation work. Nearly 30 slide locations needed to be addressed on this single 1.5 mile project. Crews installed six GRS walls, 11 Durablock walls, and addressed over 10 slides with rock slope protection measures. Additionally, the contractor made drainage improvements, updated guide rails and end treatments, and paved the entire roadway. The total cost for this slide repair job was $3.68 million.
District Wide: $15.38 millionMore From District 11