HistoricBridges.org Menu: HistoricBridges.org Menu:


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

HistoricBridges.org: Bridge Browser

Gateway Bridge

South Bridge

Gateway Bridge

Primary Photographer(s): Nathan Holth

Bridge Documented: August 11, 2013 and October 15, 2021

View Photos
and Videos
View Maps
and Links

Facility Carried / Feature Intersected
US-30 (8th Avenue and Clinton Road) Over Mississippi River and Railroad
Location
Clinton and Fulton: Clinton County, Iowa and Whiteside County, Illinois: United States
Structure Type
Metal Pony Truss Stiffening Wire Cable Suspension, Fixed and Approach Spans: Metal Deck Girder, Fixed
Construction Date and Builder / Engineer
1956 By Builder/Contractor: Allied Structural Steel Company of Chicago, Illinois and Clinton Bridge and Iron Works of Clinton, Iowa and Engineer/Design: Modjeski and Masters
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
644.0 Feet (196.3 Meters)
Structure Length
4,165.0 Feet (1269.5 Meters)
Roadway Width
26 Feet (7.92 Meters)
Spans
1 Main Span(s) and 15 Approach Span(s)
Inventory Number
20860

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

This attractive bridge was the design of noted engineering firm Modjeski and Masters. The bridge consists of a single suspended span over the river. Only the center span is suspended on this bridge, and so straight backstays are present on this bridge instead of suspended side spans. This is a less common arrangement for a suspension bridge. The bridge appears to be in good physical condition and retains good historic integrity. While not a particularly old example of its type, suspension bridges are sufficiently rare that this bridge nevertheless should be considered a significant historic bridge.

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

Information and Findings From Iowa's Historic Bridge Inventory

Discussion of Bridge

In 1944 an act of the U.S. Congress authorized the organization of the City of Clinton Bridge Commission to supervise the planning, financing and construction of a new bridge across the Mississippi. The first meeting of the seven-man board was held on April 5, 1945 (Clinton Herald, June 29, 1956:20). Traffic counts and surveys were conducted in 1945, 1946, and 1953 to gather information in support of the financing and potential location of the new bridge (Clinton Herald, June 29, 1956:29). The ISHC contracted Modjeski and Masters of Mechanicsburg, Pennsylavnia to design the bridge. Plans were drawn up in 1951 and finalized in January 1954. Work on the bridge began on September 21, 1954. Allied Structural Steel Companies of Clinton provided the steel for the bridge. The bridge was completed on June 30, 1956. The total cost of the bridge was $6.8 million (City of Clinton Bridge Commission 1956:2). In 1976, repairs were made to the west abutment and four piers on the west side of the bridge.

The bridge was included in the Phase II survey as it is a large of exceptional span or overall length, which according to the registration requirements in the MPD includes any steel suspension bridge. The steel suspension bridge is the only one of its type (Type 313) built in the state. As such, the U.S. 30 Mississippi River Bridge is eligible for inclusion in the NRHP under Criterion C as it does meet several registration requirements outlined in the MPD for bridges under Criterion C as a large exceptional span, as an exceptional example of work by an important engineer such as Modjeski and Masters; and under Criterion A as a bridge that was built as part of a large bridge building initiative.

Spans: The crossing has 15 approach spans on the west side (6 beam spans and 9 girder spans) and 14 approach spans in the east side, all of which are girder spans.

Bridge Considered Historic By Survey: Yes


This bridge is tagged with the following special condition(s): Unorganized Photos

Divider

Photo Galleries and Videos: Gateway 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

Divider

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

View Photo Gallery

Additional Unorganized Photos

Original / Full Size Photos
A supplemental collection of photos that are from additional visit(s) to the bridge and have not been organized or captioned. This gallery offers photos in the highest available resolution and file size in a touch-friendly popup viewer.
Alternatively, Browse Without Using Viewer

Divider

View Photo Gallery

Additional Unorganized Photos

Mobile Optimized Photos
A supplemental collection of photos that are from additional visit(s) to the bridge and have not been organized or captioned. This gallery features data-friendly, fast-loading photos in a touch-friendly popup viewer.
Alternatively, Browse Without Using Viewer

Divider

View Video

CarCam: Westbound Crossing

Full Motion Video
Note: The downloadable high quality version of this video (available on the video page) is well worth the download since it offers excellent 1080 HD detail and is vastly more impressive than the compressed streaming video. Streaming video of the bridge. Also includes a higher quality downloadable video for greater clarity or offline viewing.

Divider

Maps and Links: Gateway Bridge

Coordinates (Latitude, Longitude):

Search For Additional Bridge Listings:

Bridgehunter.com: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Bridgehunter.com: View listed bridges within 10 miles (16 kilometers) of this bridge.

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.

2021 National Bridge Inventory: View listed bridges within 0.5 miles (0.8 kilometers) of this bridge.

Additional Maps:

Google Maps

Google Streetview (If Available)

Bing Maps

OpenStreetMap

GeoHack (Additional Links and Coordinates)

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)

Historic Aerials (United States Only)

CalTopo Maps (United States Only)


Divider
 
Home Top

Divider

About - Contact

© Copyright 2003-2022, 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

Divider