HistoricBridges.org Menu: HistoricBridges.org Menu:


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

HistoricBridges.org: Bridge Browser

Lock and Dam Number 15

Access Bridge

Lock and Dam Number 15

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
Dam Access Road Over Mississippi River
Location
Davenport and Rock Island: Scott County, Iowa and Rock Island County, Illinois: United States
Construction Date and Builder / Engineer
1934 By Builder/Contractor: American Bridge Company of New York, New York
Rehabilitation Date
Not Available or Not Applicable
Main Span Length
115.5 Feet (35.2 Meters)
Structure Length
1,270.0 Feet (387.1 Meters)
Roadway Width
17 Feet (5.18 Meters)
Spans
11 Main Span(s)
Inventory Number
Not Applicable

Historic Significance Rating (HSR)
View Information About HSR Ratings

Bridge Documentation

View Historic American Engineering Record (HAER) Documentation For This Bridge

HAER Original Plans, PDF - HAER Data Pages, PDF

View Historical Articles About This Bridge

What is called Lock and Dam Number 15 includes a lock system, plus a dam system that includes an access bridge that cranes and other maintenance vehicles can use. The dam is an impressive structure that is noteworthy because it is an unusual type of dam called an "Active Roller Dam." A roller dam means that it has rollers to disperse the energy of water falling over the dam and thus reduce erosion risk. The "active" roller dams can move the giant steel rollers as needed. They are sometimes called a roller gate. Lock and Dam Number 15 is reportedly the largest active roller dam in the world.

The bridge structure is also extremely noteworthy since it follows the rare K-truss configuration. The K-truss was invented to make the Quebec Bridge's construction easier. Afterwards, the configuration was used on rare occasions on other bridge types. Surviving examples of k-truss bridges are historically significant due to their rarity. This example is significant on its own as a K-truss bridge and also as part of a the significant dam structure.

Above: Historical photo showing bridge construction.


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

Divider

Photo Galleries and Videos: Lock and Dam Number 15

 

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

Maps and Links: Lock and Dam Number 15

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