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WatermarkHistoric Bridges .org

The Team:

Nathan Holth - Author, Webmaster, and Photographer.

Rick McOmber - Photographer and Content Advisor.

Luke Gordon - Engineering / Construction Consultant and Photographer. offers professional photo-documentation, information, and advocacy for all types of historic bridges except covered bridges. North American coverage radiates outward from Michigan, with Pennsylvania, Chicago, and Ontario being coverage highlights as well. places an unparalleled priority on comprehensive and detail-oriented photo-documentation of each bridge presented. In addition, strongly advocates for the reform of surface transportation policy and fights to increase awareness of the feasibility of historic bridge preservation. is guided by the philosophy that placing a greater funding focus on the maintenance, repair, and rehabilitation of existing bridges, whether historic or not, is the the best solution for a country's aging and deteriorating bridges.

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Click Here For The Latest Website Update (3-26-15).

Divider Features


BridgeSeek Search: Click Here To Begin

United States
New Hampshire
New Jersey
New York
South Carolina
West Virginia
British Columbia
United Kingdom and Ireland
Featuring historic bridge photo-documentation and information, the Bridge Browser is the main feature on this website. The map shown here is an interactive clickable map that allows you to access the bridges on this website. Places listed in blue text have bridges available. BridgeSeek, an advanced search tool, is also available. Also, a standalone version of the Bridge Browser is available.

Random Bridge (Click To Load Another)
Benton Road Bridge
Rural: Crawford County, Ohio This traditionally composed riveted pony truss has been bypassed and abandoned. Click to visit page.

 Interactive Map of Available States and Provinces

There are currently 4290 bridges available in the Bridge Browser.

Click here to view the latest additions to the Bridge Browser. Note: This list of newly added bridges may include bridge pages which are still under construction.

Bridge Browser listings are also included in Google's Field Trip app, which runs on smartphones and Google Glass. It will list (or alert you to) bridges that are nearby, and includes a photo and narrative for the bridge, followed by a link to the corresponding Bridge Browser entry on Click the below icon to learn about and download Field Trip.


 Bridge Spotlight:

Approximate Time Remaining Until All United States Historic Metal Truss Bridges Not Preserved Are Demolished:

 A Tale of Two Cities: Trying To Save Bridges In Port Huron, Michigan and Sarnia, Ontario

On either side of the St. Clair River, which divides the United States and Canada, two ongoing fights for two historic bridges continue to work to save significant community landmarks from demolition.

Old Lakeshore Road Bridge

Located in Sarnia Ontario, and also called the Cull Drain Bridge, this is an exceedingly rare surviving example of a bridge documented as having been built by the Sarnia-based firm of Jenks-Dresser. Built in 1910, the bridge is also technologically significant on a provincial level as an early surviving example of a polygonal Warren truss bridge in Ontario. Most pony truss bridges built during this period did not have polygonal top chords. Finally, the bridge's 100 foot length is fairly long for a pony truss built during this time.

This bridge has been closed to vehicular traffic for many years, but was a popular crossing for pedestrians walking along the beautiful Lake Huron shoreline until it was closed to pedestrians following an inspection. Now there is a debate about whether to restore the bridge or demolish it.

Click here to visit the page for the Old Lakshore Road Bridge

Port Huron Railroad Bridge

Located in Port Huron, Michigan, this 1931 through truss bascule bridge is one of only three bascule bridges in Michigan using a design patented in 1921 by Hugo Abt for the American Bridge Company. Including this bridge, only six examples of this type are known to remain nationwide today, making the design exceedingly rare. Additionally, the Port Huron bridge appears to have the longest span of this type. It is also a prominent local landmark.

Today abandoned in its raised position, the bridge is owned by the Port Huron Yacht Club who purchased the land and the bridge. The Club is seeking to demolish this historic bridge, yet lacks concrete plans for using the land around the bridge.

Many people in Port Huron appreciate the beauty and heritage of this bridge and have expressed their support for preserving this landmark.

Click here to visit the page for the Port Huron Pere Marquette Railroad Bridge

An Introduction to Historic Bridges

An Introduction to Historic Truss Bridges Informative presentations designed to introduce viewers to the world of historic bridges. Utilizing photos and diagrams, the various terminology, construction, and configuration of historic bridges is discussed. A presentation on inspecting historic bridges is also available. This page also features some formal, yet easy-to-read, essays that further explore the historic bridge world.

Historic Bridges Encyclopedia

Historic Bridges Encyclopedia This feature contains articles relating to historic bridges, as well as information about entire categories of historic bridges. This section also includes some non-bridge related photos. Some of the major features include:
- An all-in-one collection of some of the best bridge photos available in wallpaper size.
- A look at historic metal water towers, which share a lot of design characteristics with truss bridges.
- A collection of interesting photos of the natural world.
- An in-depth look at curved chord through girder bridges.

Historic Bridge Park: A Visitor's Guide

Historic Bridge Park: A Visitor's Guide A comprehensive visitor's guide to this unique park located in Calhoun County, Michigan whose focus is the restored metal truss bridges within the park. Contains maps, photos, and links to bridge browser pages for the historic bridges within the park.
Divider Prints Store

Prints Store The Prints Store is where you can purchase quality prints of selected photos from taken by Nathan Holth. Photos are organized into folders by state/province. Don't see the bridge and/or photo you would like a print of? Contact us and let us know what photo you would like and we will upload it to the store so you can purchase your prints.

Turning the Tide

Turning The Tide Your help is needed! Help an important piece of historic bridge legislation revised and passed in 2007 to increase historic bridge preservation: A guide to write letters to U.S. government officials and legislators. These proposed changes did not pass in 2006 because the government felt that not enough citizens had spoken up in favor of historic bridges. Help change that!

Historic Bridge Newsroom: Twitter

Michigan Historic Bridge Inventory: Metal Truss Bridges Presented through the convenient format of Twitter, the Historic Bridge Newsroom is a simple collection of links to current news articles about historic bridges, as well as word-of-mouth news snippets. Coverage includes any historic bridges in the United States and Canada, which may or may not be in the Bridge Browser. This is a human-edited list of links; therefore coverage may be biased to the areas that those team members who maintain it are familiar with.

Links to Related Websites

Links to Related Websites Features a collection of external links to other bridge websites on the Internet. Many other bridge enthusiast websites feature bridges from areas not covered by this website, and links to those websites can be found here.

News and Updates


Chicago's Bridges Book Now Available!

By Nathan Holth, author of, this book provides a discussion of the history of Chicago's movable bridges, and includes a virtual tour discussing all movable bridges remaining in Chicago today. The book includes dozens of full color photos.

Only $9.95 U.S.!
($11.95 Canadian)

Available Now Direct From The Publisher!


Looking For A Pedestrian or Light Vehicular Bridge?

Whether you are a park, trail organization, college, city, or private landowner, you want your property to be something unique and special. Why settle for a boring, dull pre-fabricated pedestrian bridge when you can get a beautiful historic bridge to do the same thing? Many states maintain a list of bridges which you can acquire, relocate and restore, and other individually listed opportunities often are available. These bridges normally can be acquired free of charge, so use the money you were going to put toward buying a pre-fab bridge and instead use it to restore the bridge. Not sure how to restore a bridge? can help guide you to people and firms that can help, or you can just get in touch with Bach Steel. Note: these bridges will be demolished if nobody acquires them.

View Currently Available Bridges List, Maintained By Historic Bridge Foundation


 Support Historic Bridges With A Donation To The Historic Bridge Foundation:

We do not seek donations for the operation of, nor do we feature advertisements in our content. However if you are interested in helping the cause of historic bridges by financial means, we strongly suggest a tax-deductible donation to the Historic Bridge Foundation:


Historic Bridge Foundation

The Historic Bridge Foundation works to encourage government agencies and officials to preserve historic bridges, the Foundation provides consultation and guidance to individuals and groups seeking to preserve historic bridges. The expertise available at the Foundation is evidenced by the fact that frequently refers people to the Foundation for further assistance beyond what itself provides.

If you have any questions about why a donation to the Historic Bridge Foundation is worthwhile, feel free to contact Alternatively, learn more about the Historic Bridge Foundation at their website

Website Updates

March 26, 2015 - Introduction to Historic Bridges, Revisions and Expansions's crash-course in historic bridges, An Introduction to Historic Bridges has been updated and revised, to provide additional information, as well as make some clarifications and corrections. Changes include:

Massive expansion of metal arch section, substantial expansion and revision on continuous vs true hinged cantilever trusses, Added detail for Phoenix and Keystone columns, Added detail and intersection variations for Lattice trusses (triple and quadruple), Added detail for lenticular trusses, Added detail for Bailey trusses, Added super-elevation, Added link to iron/steel Brands page, Added link to MI Concrete Camelback Page.

Finally, the PDF version has been upgraded so the hyperlinks work in it just like the PowerPoint version.

View An Introduction To Historic Bridges

March 12, 2015 - Ohio Update Added

A large update for bridges in Ohio, with a focus on adding unusual, rare, and significant bridges to the Bridge Browser, has been completed and released. 

View The Latest Additions To The Website

March 3, 2015 - New View County Bridges On Google Map Option

Google apparently has nothing better to do these days than to end supporting technologies that "the little guys" like us spent a lot of time adapting to our website. For that reason, at the end of February's old links to view a Google Map showing bridges in a particular county stopped working thanks to Google ending support for the method we used to display the maps.

We had to rebuild the feature to view a particular county's bridges on a Google map from scratch as a result using the new system. We are not experts at Google APIs... but we think we have the new system working. If you notice problems, please contact us. Assuming it works, we have to admit it probably is a little nicer than our old system. Clicking on a pushpin will show the bridge name, type, and even the thumbnail photo of the bridge, which our old map didn't do. Moreover, if you are logged into a Google Account with personalized favorite locations, those should show up on the map as well. So you can see if any bridges are near places you have marked on your personal map, etc.

The link to view a county's bridges in a Google Map will appear in the same location, in a county page, right below the county title.

Here is a direct link to a sample map for our new coverage area, Duval County, Florida

March 2, 2015 - SE USA Update

A large update with bridges for the SE USA has been released. It includes portions of northern Florida, Georgia, Tennessee, and northeastern Alabama.

February 6, 2015 - Misc. Update

A group of bridges from various places including Kentucky, Indiana, Illinois, Missouri and Ontario have been released.

February 3, 2015 - Pacific Northwest Update Complete

All bridges from the Pacific Northwest trip have now been added to the website.

January 1, 2015 - Pacific Northwest Official Halfway Update Release

Adding bridges to the Pacific Northwest continues, and is about halfway done. To celebrate this moment and the new year, these bridges have been officially added to the Bridge Browser, which meant adding four previously unlisted states into the Bridge Browser. All the British Columbia bridges have been added. Remaining work for this update is focused on Idaho, Montana, Washington, and Oregon.

December 4, 2014 - Pacific Northwest Updates

Adding bridges to the Pacific Northwest continues. In addition to new bridges currently being added, four existing pages (for highly significant bridges), which previously had only guest photos have been supplemented with a traditional in-house full detail-oriented photo-documentation by The bridges are:
Niagara Canyon Bridge
Cowichan River Railway Bridge
Johnson Street Bridge
Pattullo Bridge

November 26, 2014 - Belated Historic Bridge Awareness Month

November is Historic Bridge Awareness Month and ironically we at haven't been able to devote as much time to promoting this awareness effort this year as we had hoped, as we found ourselves busy working with historic bridges: adding one of the greatest coverage increases ever to the Bridge Browser, that of Washington State and neighboring areas including British Columbia, while also conducting a bridge documentation in the southeastern United States and the potentially incredible discovery that a swing bridge in Florida may be the oldest swing bridge in the country.

 In 2015, we plan to work with other organizations to better promote Historic Bridge Awareness Month.

Meanwhile, Craig Holstine, historian for Washington State Department of Transportation was interviewed today by Chris Hansen for a talk show on KPQ Radio about Historic Bridge Awareness Month and Washington State's beautiful historic bridges (which we are in progress of adding to The excellent interview on KPQ embodies the spirit of Historic Bridge Awareness Month. Click here to listen to a recording of the interview.

November 5, 2014 - A Few More Pacific Northwest Bridges

A few more bridges from the Pacific Northwest trip have been added. As the bridges are being added to the website, they won't initially be available through the maps and menus of the Bridge Browser until an official update package is released. You can however preview the bridges using the link below. Check back off and on as more bridges may be added to the list.