HistoricBridges.org Menu: HistoricBridges.org Menu:

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

HistoricBridges.org: Bridge Browser

KH-21 Bridge

Ausable River Cut Bridge

KH-21 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: June 26, 2005

View Photos
and Videos
View Maps
and Links

Facility Carried / Feature Intersected
KH-21 (Lakeshore Road) Over Ausable River Cut
Lambton Shores: Lambton County, Ontario: Canada
Structure Type
Metal 6 Panel Bolt-Connected Polygonal Warren Pony Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed
Construction Date and Builder / Engineer
1963 By Builder/Contractor: Unknown
Rehabilitation Date
Main Span Length
122.0 Feet (37.2 Meters)
Structure Length
250.0 Feet (76.2 Meters)
Roadway Width
Not Available
1 Main Span(s) and 2 Approach Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This bridge is a late but uncommon surviving example of a truss bridge on a provincial highway. The Ontario Ministry of Transportation gives a date of 1963 for this bridge. All connections are bolted. Rivets are present on the bridge as well, holding the built-up beams together. This is evidence of the transition away from riveting that occurred in the middle of the 20th Century. The KH-21 bridge has steel stringer approaches, one span at each end. The main truss span sits on simple concrete piers.

There are old abutments next to this bridge, and they are concrete also, indicating a previous bridge was here before the present span. Based on the concrete design of the abutments which are actually in good condition considering their abandonment, it seems likely that the previous bridge dated to the early 20th Century.

In 2005, this bridge was rehabilitation. The work included repainting the trusses, which really improved the appearance of the bridge. The paint will also protect the bridge from rusting. The original steel railings were replaced with unsightly New Jersey Barriers, which substantially obstructed the view of the bridge. The only good thing about the barriers is they protect the trusses from collision damage, and the solid nature of the barriers should help deflect winter deicing salts away from the trusses, helping to prevent the deterioration that the salt can cause.


Photo Galleries and Videos: KH-21 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


Maps and Links: KH-21 Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

HistoricBridges.org Bridge Browser: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

HistoricBridges.org Bridge Browser: View listed bridges within 10 miles (16 kilometers) of this bridge.

Additional Maps:

Google Maps

Google Streetview (If Available)

Bing Maps


GeoHack (Additional Links and Coordinates)

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

Home Top


About - Contact

© Copyright 2003-2023, 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