HistoricBridges.org Menu: HistoricBridges.org Menu:

We Recommend These Resources:
Bach Steel - Experts at historic truss bridge restoration.

HistoricBridges.org: Bridge Browser

Oak Ridge Road Bridge

Oak Ridge Road Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 1, 2010

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Oak Ridge Road (PA-4061) Over Brush Run
Rural: Washington County, Pennsylvania: United States
Construction Date and Builder / Engineer
1913 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
39 Feet (11.9 Meters)
Structure Length
40 Feet (12.2 Meters)
Roadway Width
15 Feet (4.57 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This bridge's future is at risk!

Bridge Status: This historic bridge is slated for demolition and replacement!

View Archived National Bridge Inventory Report - Has Additional Details and Evaluation

This bridge is a riveted Queenpost pony truss bridge. It does not feature any railings between the end posts, but outside of the endposts, a simple and unusual railing composed of rolled angles extends slightly beyond the truss, connected to the top of the abutments and the end posts. The bridge retains good historic integrity. The abutments are ashlar (stone) and the deck is concrete with an asphalt wearing surface.

Although Washington County has (or had) several Queenpost truss bridges, the truss type is nationally an uncommon truss type. Some historic bridge inventories, including Pennsylvania's do not recognize the Queenpost as a metal truss bridge type, instead classifying them as a Pratt. However, HistoricBridges.org believes that the truss type needs to be distinguished. The truss configuration was used only for some of the shortest crossings, and as such, surviving examples represent what small metal truss bridge construction looked like during this period in history.

Thanks to a lack of maintenance, the bridge deteriorated severely, developing widespread section loss on portions of the truss around the deck, including significant areas of 100% section loss. One vertical member was almost completely severed by a ring of 100% section loss. This bridge is an example of how our transportation heritage is being destroyed by a lack of maintenance.

Just less than two months after HistoricBridges.org documented the bridge, the bridge was closed to all traffic on July 26, 2010 due to the advanced deterioration. The bridge is slated for demolition and replacement.

Washington County still has a couple riveted Queenpost truss bridges left in the county. With the demolition of this bridge, it is imperative that these remaining examples be preserved in order to ensure this truss type continues to be represented in the region.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The three-panel, 40' long and 15' wide riveted Pratt pony truss bridge built in 1913 is supported on ashlar abutments with wingwalls. The upper chords and end posts are angles with cover plate, and the verticals and all other members are angles with battens. The deck is concrete. The bridge has no innovative or distinctive details, and it is an example of what by 1910 was a commonly used type and design in the county and region. Neither it nor its setting are historically or technologically significant. It was built by a prolific instate fabricator.

Discussion of Surrounding Area

The bridge carries one lane of a state road on a horizontal alignment over a stream in a sparsely developed, rural setting just south of the intersection of SR 4061 and SR 331.

Bridge Considered Historic By Survey: No


Photo Galleries and Videos: Oak Ridge Road Bridge

View Photo Gallery
Bridge Photo-Documentation
Original / Full Size Photos
A collection of overview and detail photos. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Photo Gallery
Bridge Photo-Documentation
Mobile Optimized Photos
A collection of overview and detail photos. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer. Alternatively, Browse Without Using Viewer
View Video
Northbound Approach and Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.
View Video
Southbound Crossing of the Bridge
Full Motion Video
Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.


Maps and Links: Oak Ridge Road Bridge

This bridge is closed to all traffic.

Coordinates (Latitude, Longitude):

View Bridge Location In:

Bridgehunter.com: View listed bridges within a half mile of this bridge.

Bridgehunter.com: View listed bridges within 10 miles of this bridge.

Google Maps

Google Streetview (If Available)

Bing Maps


Apple Maps (Via DuckDuckGo Search)

Apple Maps (Apple devices only)


HERE We Go Maps

ACME Mapper

Waze Map

Android: Open Location In Your Map or GPS App

Flickr Gallery (Find Nearby Photos)

Wikimedia Commons (Find Nearby Photos)

Directions Via Sygic For Android

Directions Via Sygic For iOS and Android Dolphin Browser

USGS National Map (United States Only)

Historical USGS Topo Maps (United States Only)

CalTopo Maps (United States Only)

Home Top


About - Contact

© Copyright 2003-2021, HistoricBridges.org. All Rights Reserved. Disclaimer: HistoricBridges.org is a volunteer group of private citizens. HistoricBridges.org is NOT a government agency, does not represent or work with any governmental agencies, nor is it in any way associated with any government agency or any non-profit organization. While we strive for accuracy in our factual content, HistoricBridges.org offers no guarantee of accuracy. Information is provided "as is" without warranty of any kind, either expressed or implied. Information could include technical inaccuracies or errors of omission. Opinions and commentary are the opinions of the respective HistoricBridges.org member who made them and do not necessarily represent the views of anyone else, including any outside photographers whose images may appear on the page in which the commentary appears. HistoricBridges.org does not bear any responsibility for any consequences resulting from the use of this or any other HistoricBridges.org information. Owners and users of bridges have the responsibility of correctly following all applicable laws, rules, and regulations, regardless of any HistoricBridges.org information.

Admin Login