Pennsylvania Avenue – Retaining Wall


  • Survey
  • Erosion/Sedimentation Control Plans
  • Sidewalk Design
  • Permitting
  • ADA Curb Ramps and Crosswalks
  • Roadway Design
  • Design of two Retaining Walls
  • Design of Traffic Barrier that top the wall
  • Traffic Control
  • Coordination with Adjacent Railroad Owner
  • Coordination with Adjacent Property Owners
  • Management of Geotechnical Subconsultant
  • Project Management, including coordination with owner and funding partners
  • Bidding
  • Construction Inspection
  • Construction Consultation


Mt. Union Borough Council, Huntingdon County

Project Details

This project included removing failing and collapsed stone masonry retaining walls and construction of new retaining walls to support a two-block section of the southern lane of Pennsylvania Avenue.  In their place, galvanized steel walls with reinforced concrete facing were designed and constructed.  The walls, located between Franklin and Jefferson Streets, total more than 1,000’ long and have a maximum height of 10’.

To match the context of the Mount Union Historic District and the adjacent East Broad Top Railroad National Historic Landmark, the walls include concrete form liners, were stained to match the appearance of the original walls and display a black coated traffic barrier which aesthetically blends with the railroad and neighborhood setting.


We have worked with Keller Engineers for structural and civil engineering support on six projects over the past five years and have been very pleased with the results. Our projects tend to be complicated phased renovation/ addition projects calling for creativity in planning and construction.  I have been particularity pleased with their responsiveness to issues that arise during construction which is of particular importance to us and our clients. Vern L. McKissick, III, AIA, LEED AP, Owner/Architect McKissick Associates

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