Wagman Heavy Civil Project

PPL Causeway

  • Location

    Harrisburg, PA

  • Duration

    May 2023 - December 2023

The PPL Causeway project was a $4M project for PPL Electric that replaced transmission poles and lines across the Susquehanna River to improve reliability for residents by reducing power outages. This project required temporary stone causeway to access portions of the river to build new foundations and setting of new poles.

Wagman was selected to perform the work because of our extensive knowledge of the river and having installed a similar causeway on a nearby bridge years prior. The scope of work included construction and removing the causeway and installing aids to navigation (buoys and signs in the river).

Key Challenges & Project Details

  • Wagman had six weeks to install and six weeks to remove the causeway.
  • Roughly 30,000 tons of riprap was used to construct the 1,500-foot-long causeway from the railroad tracks on the east side of the river to Stucker Island.
  • 48” diameter pipes were used as culverts to direct flow through the causeway
  • Wagman topped the causeway with smaller stones to tighten the ground for the large equipment used to drill the new foundations.
  • Train crossings occurred daily, which delayed trucking of causeway stone. Wagman staged pipes on the causeway so work could still be completed when access across the tracks was prohibited.
  • The team watched river levels, rain forecasts and ever-changing river conditions, ensuring there was enough time to demobilize equipment if flood conditions were on the horizon.