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TPD’s Structures Team has demonstrated success in delivering structure projects for construction, including bridges, culverts, retaining walls, and noise walls. Over the years, TPD has completed numerous projects for PennDOT Districts 2-0, 3-0, 4-0, 5-0, 6-0, 8-0, and 9-0, 10-0, 11-0, the Pennsylvania Turnpike Commission, counties and local municipalities.

TPD has completed bridge inspections for PennDOT, local government bridge owners, and private clients in accordance with the National Bridge Inspection Standards (NBIS). We have performed both routine (periodic) inspections for continual monitoring of bridge conditions, and in-depth inspections for detailed structural evaluation and rehabilitation. Our inspectors are qualified Professional Engineers or Engineers-in-Training with experience in bridge analysis, design, maintenance, and rehabilitation. In addition, our inspectors are PennDOT Certified Bridge Safety Inspectors (C.B.S.I.), and have completed PennDOT CoRe Element Assessment and BMS2 I-Form training.

We regularly deal with a wide variety of bridge sizes ranging from small culvert and single span bridges, to large multi-span structures. Bridge types have included historic steel trusses, prestressed beam bridges, steel beam bridges, historic wooden covered bridges, concrete and steel culverts, and masonry and concrete arches. As bridge engineers, our inspectors understand bridge behavior and can recognize critical conditions observed during inspections. Particular attention is directed toward critical areas such as load postings, safety features, steel corrosion, and scour conditions. Fracture critical members receive close inspection, documentation, and evaluation.

Bridge Design



Yellow Springs Road
over PA Turnpike
Bridge Replacement

Charlestown Township,
Chester County, PA



S.R. 0581, Sec. 067
over 10th Street
Design-Build Accelerated
Superstructure Replacement

Lemoyne Borough,
Cumberland County, PA



Barnettstown Bridge
Replacement S.R. 0913,
Sec. 06B over Shoup Run

Carbon Township,
Huntingdon County, PA




Cedar Crest Boulevard
(S.R. 1019) over Little Cedar
Creek Bridge Replacement

Lehigh County, PA




I-70 Structure
Replacement Design/Build

Rostraver Township,
Westmoreland County, PA



Pennsylvania Rapid Bridge
Replacement Project

Various Counties, PA
Districts 2-0, 3-0, 5-0, 8-0, 9-0, 10-0,
11-0 and 12-0)


Route 209 over
Wiconisco Creek
Bridge Replacement
(S.R. 0209, Section 011)

Williams Township,
Dauphin County, PA



Church Road Bridge
(County Bridge #282)
Replacement Project

Tredyffrin Township,
Chester County, PA



Stonycreek River Bridge
Replacement - S.R. 4022,
Section 001

Conemaugh & Paint Townships,
Somerset County, PA


Limekiln Pike over
Little Neshaminy Creek
Bridge Replacement
(S.R. 0152, Section MLN)

Montgomery and Horsham Township,
Montgomery County, PA

Bridge Inspection



PA Turnpike Open
End Bridge Inspections
between MP 20- MP 28

Butler and Beaver
Counties, PA



Montgomery County
Under 20'
Bridge Inspections

Montgomery County, PA




Chester County
NBIS Bridge Inspections

Chester County, PA




Lancaster County NBIS
Bridge Inspections

Lancaster County, PA




Berks County NBIS
Bridge Inspections

Berks County, PA




Chester County Under
20’ Bridge Inspections

Chester County, PA