HistoricBridges.org Menu: HistoricBridges.org Menu:

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

HistoricBridges.org: Bridge Browser

Iroquois 2800 Bridge

TR-49B Bridge

Iroquois 2800 Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 13, 2006

View Photos
and Videos
View Maps
and Links

Key Facts

Facility Carried / Feature Intersected
Iroquois 2800 Over Prairie Creek
Rural: Iroquois County, Illinois: United States
Construction Date and Builder / Engineer
1904 By Builder/Contractor: Unknown

Technical Facts

Rehabilitation Date
Not Available or Not Applicable
Main Span Length
50 Feet (15.2 Meters)
Structure Length
51 Feet (15.4 Meters)
Roadway Width
15.7 Feet (4.79 Meters)
1 Main Span(s)
NBI Number

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

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

Please visit the Iroquois 1250 bridge page for an in-depth overview of bedstead truss bridges. This 2800 bridge is different in terms of appearance than the Iroquois 1250, including the presence of v-lacing on the verticals of this 2800 bridge, which suggests that the 2800 Bridge was not built by the Smith Bridge Company like Iroquois 1250. Strictly speaking, the Iroquois 2800 Bridge as seen today is not a bedstead truss bridge. It is a pony truss with vertical end posts. A bedstead truss must have vertical end posts that extend below the bridge superstructure to additionally function as a substructure. This bridge does not do that. However, their are substantial welded plate additions to the ends of this bridge. Vertical endpost pony truss bridges that are not bedstead truss bridges are exceedingly rare, even more than bedstead trusses which are themselves rare. This fact, combined with the alterations found at the ends of the bridge suggest this is actually a bedstead truss bridge that had its legs cut off and was placed on a full abutment substructure system. The abutment is the final piece of evidence that such an alteration may have taken place, since it is not original. The abutment seen today is built from corrugated steel, with an i-beam on top to support the truss bridge. There is no proof that this bridge was originally a bedstead, but it is highly likely based on the aforementioned facts. Despite the alteration, the bridge is still significant since the rest of the truss is largely unaltered, and it is increasingly rare in a county that has demolished so many of its historic truss bridges.


Photo Galleries and Videos: Iroquois 2800 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: Iroquois 2800 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


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