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Home > Services > Bridge Design & Inspection > Washington Township Boulevard Bridge


Washington Township
13013 Welty Road
Waynesboro, PA 17268

Project Completion Date

May 2009

Construction Cost



Association of Bridge Construction and Design (ABCD),
Outstanding New Short Span(s) Bridge Award,

Project Overview

TPD was selected by Washington Township to provide the Bridge and Roadway Design and Construction Services associated with the Washington Township Boulevard Bridge crossing the East Branch of Antietam Creek. This project provides a key link in the construction of the new Washington Township Boulevard – a new two-lane bypass to relieve traffic congestion on Route 16 through Waynesboro. The structure consists of a 152’ 8” long, three-span open bottom precast concrete Con/Span arch having three 48’-0” clear spans. This bridge was the first 3-span Con/Span arch constructed in PA. The bridge carries two lanes of traffic, and was designed to allow for future widening to accommodate future expansion of the Boulevard to a 4-lane divided roadway.

TPD provided complete engineering studies to determine the most cost-effective and aesthetically appealing structure to meet the transportation needs of the community and fit within the rural and historic setting. In addition to completing hydraulic studies and design, TPD also investigated methods to simulate an historic stone arch appearance on the new bridge by utilizing concrete formliners and concrete staining. The new structure’s façade has the appearance of stone masonry of the Antietam Drystack style.

In addition to the new vehicle bridge, the new Washington Township Boulevard will provide an 8’ walkway along the roadway for pedestrian and bicycle traffic. In the vicinity of the new vehicle bridge, the walkway will be diverted away from the roadway onto an existing driveway that will be converted to pedestrian use. The path of the driveway follows the East Branch of Antietam Creek, and offers a park-like setting for hikers and bikers away from vehicle traffic. Located several hundred feet upstream from the new bridge, the existing driveway bridge will provide the pedestrian walkway crossing of the creek. This bridge will be rehabilitated to accommodate the walkway, including safety upgrades and abutment repairs.

TPD provided the following services for the project:

Bridge Feasibility Study and Report to examine alternative bridge lengths and flooding impacts to adjacent properties

Bridge Safety Inspection and Load Rating Analysis of Existing Driveway Bridge to evaluate the adequacy of the bridge for use as a pedestrian facility

Type, Size & Location (TS&L) Studies to determine the most cost-effective/aesthetically appealing design for the site

Hydraulic and Hydrologic Analyses to design an adequate bridge opening to maintain existing floodplain boundaries and to design appropriate stream protection measures for scour

Environmental Permitting: Preparation of a PADEP/USACOE Joint Waterway Permit, Preparation of Erosion and Sediment Pollution Control Plans for approval by the Franklin County Conservation District, and Coordination of Cultural Resource studies, including study of nearby historic properties and conducting an archaeological investigation

Final Design of the new structure and 600’ of roadway across the new structure

Preparation of Contract Bid Documents and Contract Bidding Assistance

Construction Management and Inspection - including inspection of pre-cast components at the plant