Wagman Geotechnical Construction Project

Butler Pike Sinkhole Repair

  • Location

    Plymouth Meeting, PA

  • Duration

    July 2020 - September 2020

Wagman’s Geotechnical Construction Group was contracted with Loftus Construction, Inc. to furnish and install limited mobility grout for sinkhole repair in Butler Pike where it crosses an unnamed tributary to Plymouth Creek, in Plymouth Meeting, Montgomery County, Pa. This segment of Butler Pike is also adjacent to an underpass under Norfolk Southern Railway Company rail lines. Several utilities existed both underground, and overhead, parallel to Butler Pike.

There were 220 points grouted for a total of approximately 7,900 linear feet of drilling and 525 cubic yards of limited mobility grout. The multiple active underground utilities required extensive real time monitoring during grouting operations for movement due to the pressure injection of the grout.

Key Challenges & Project Details

  • Several underground utilities were active in the work area. Due to the potential risk of damage to these utilities during pressure injection of the grout, these utilities required extensive real-time monitoring.
  • Additionally, several overhead utilities and a low-clearance underpass existed, restricting access to low-headroom equipment.