HistoricBridges.org Menu: HistoricBridges.org Menu:


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

HistoricBridges.org: Bridge Browser

Tysons Bridge

Tysons Bridge

Primary Photographer(s): Elaine Deutsch

Bridge Documented: 2008

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Bertolet School Road Over French Creek
Location
Rural: Chester County, Pennsylvania: United States
Construction Date and Builder / Engineer
1905 By Builder/Contractor: John Denithorne and Sons of Phoenixville, Pennsylvania

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
89 Feet (27 Meters)
Structure Length
90 Feet (27 Meters)
Roadway Width
14 Feet (4.27 Meters)
Spans
1 Main Span(s)
NBI Number
15701505020196

Historic Significance Rating (HSR)

Bridge Documentation

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

This bridge is an early surviving example of a highway truss bridge with riveted connections. It documents the fact that local bridge builder John Denithorne and Son, of whom a number of pre-1900 pin-connected truss bridges survive as well, followed the national trend and transitioned into riveted connections in the 20th Century. The use of u-bolt hangers for the floorbeams, common in pin-connected bridges but rare in rivet-connected truss bridges, shows a lingering in pre-1900 construction methods.

Information and Findings From Pennsylvania's Historic Bridge Inventory

Discussion of Bridge

The one-span, 88'-long, rivet-connected steel Warren pony truss bridge was built by John Denithorne & Son in 1905. It has standard built-up members, lattice railings, and is supported on stone abutments. U-shaped floorbeam hangers pick up rolled floorbeams and pass over saddles at the lower chord connections. The floorbeams support steel stringers and a laminated timber deck placed in 1985. Fieldstone wingwalls with parapets enclose the approach roadways. It is representative of the transition period from 1895 to 1910 when riveted connections replaced pinned connections as the dominant type of metal truss bridge connection. U-shaped floorbeam hangers, a detail most often associated with pin connected bridges, are an important transition detail. Riveted truss bridges with U-shaped floorbeam hangers are not common. It is a significant example of its type and design.

Discussion of Surrounding Area

The bridge carries a 2 lane road over a stream in a rural setting with woods and scattered 19th to late-20th-century residences. Bertolet School Road dead ends south of the bridge. On the north side of the bridge is Camp Sankanac, a recreation center incorporating elements of an earlier mill. The 19th-century stone mill building and residence have been converted to offices and a community building. At the bridge's northeast quadrant is a swimming pool.

Bridge Considered Historic By Survey: Yes

Divider

Photo Galleries and Videos: Tysons 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

Divider

Maps and Links: Tysons Bridge

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

OpenStreetMap

Apple Maps (Via DuckDuckGo Search)

Apple Maps (Apple devices only)

MapQuest

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)


Divider
 
Home Top

Divider

About - Contact

© Copyright 2003-2020, 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.

Divider