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Home > Services > Bridge Design & Inspection > Blue Ridge Trail over Wapwallopen Creek Bridge Replacement (S.R. 3007, Section 370)


PennDOT District 4-0
55 Keystone Industrial Park
Dunmore, PA 18512

Project Completion Date

July 2011

Construction Cost


Project Overview

TPD was selected by PennDOT District 4-0 to complete the replacement of the S.R. 3007 (Blue Ridge Trail) over Wapwallopen Creek in Dorrance Township, Luzerne County, PA. The existing structure was a single-span steel I-beam structure with an approximate span of 57-feet. The structure currently carries a low volume of traffic, with farm fields, woods and a private pond adjacent to the bridge and was previously posted for a weight limit of 32-tons or 37-ton combinations, limited to one truck. The bridge was in fair to poor condition with some section loss of the beams, a crack in the near abutment, and substandard railing across the bridge.

Based on existing conditions, TPD designed a single-span structure with integral abutments and a prestressed concrete bulb-tee superstructure to replace the existing S.R. 3007 bridge. This design allows for the maintenance of the elevation of the existing low chord.

TPD proposed an 80’-0” replacement structure, with integral abutments. Although longer in span than the existing bridge, and longer than some of the full height abutment options, the use of the integral abutments allowed the substructure costs to be minimized, while also eliminating impact and minimizing the required right-of-way for the project. The longer span allows for the ability to utilize less prestressed bulb-tee beams, while eliminating any adverse impact to the hydraulic opening.