Projects

Delaware Canal 04_web
Delaware Canal 02_web2
Delaware Canal 03_web2
Falls Township, PA

CSX Railroad Pedestrian Tunnel

Turn-Key Tunneling, Inc was subcontracted for this Pennsylvania Department of Transportation project featuring a 12' dia tunnel installation using a hydraulic driven tunnel shield.

Special conditions: Constructed under an active Conrail track with unstable soil. Project required ground pretreatment prior to tunneling to ensure minimum subsidence beneath the active railway.

Turn-Key employed JennChem stabilizer to meet the contract requirements on the pretreatment using 250 injection rods to solidify the loose fill above the tunnel limits. The project consisted of a 140-lf drive of 144' dia tunnel.

Further unforeseen issues included boulders and specialty backstop design/built to support initial jacking load of 960,000 lbs to launch the shield.

Completed:

November 2018

Client:

Pennsylvania Department of Transportation
400 North Street, Fifth Floor
Harrisburg, PA 17120

Contractor:

AP Construction, Inc.
One Crescent Blvd, Ste 104
Philadelphia, PA 19112
Lee Norelli

Project Leader:

Brian Froehlich, PE

Location:

Delaware, PA