Excavation Contractors in West Mifflin, PA

Excavation contractors in West Mifflin work on land that industry has changed. The borough's landscape is largely hilly and wooded, but coal mining has altered the flow and quality of small streams, and historic dumping of steel mill byproducts like slag and fly ash substantially reshaped the original ground. That means fill of unknown makeup in places, and it affects how we dig and what we haul.

Fill and slag

Slag can be hard, sharp and difficult to dig, and fill sites can settle unevenly. Before a foundation, pool or big grading job, we ask about the property's history and look at nearby cuts. Where fill is suspected, a geotechnical check before building is worth the cost.

Kennywood and the airport

West Mifflin is home to Kennywood Park, one of America's oldest traditional amusement parks, and Allegheny County Airport, which places most of the borough in Class D airspace.

Shrinking population, older homes

The population peaked at 28,070 in 1970 and was 19,589 in 2020, in 9,407 housing units. Older homes need laterals and drainage; some owners are removing garages and outbuildings.

Hilly and wooded

Away from the old industrial ground, West Mifflin is largely hilly and wooded. Homes sit on slopes with retaining walls and steep driveways. Grading and drainage plans avoid overloading slope tops and cutting deep at the toe, two triggers the USGS identified for slides in this region.

PA 885

PA 885 is the borough's main road and meets PA 51 nearby. No interstates pass through. Work on state routes needs PennDOT approval.

Common West Mifflin jobs

• Demolition and hauling
• Drainage and regrading
• Lateral trenches
• Site prep on former fill

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