Centennial Bridge

Photos 

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Elevation From West Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Elevation From West Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Elevation, Two Middle Spans, From West Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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3/4 View From Southwest Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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3/4 View From Deck, From Southeast Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Construction Details Of Arch, From Deck Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Center Toll Booth, From Southeast Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Underside, From North Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Underside, 3/4 View At South End Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Highway Approach, Pylons, From South Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Builders Plate At South End Photo by Joe Elliott, Summer 1995, for HAER View photos at Library of Congress

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Pylon - Southeast Quadrant Photo taken by J.R. Manning

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South Portal Span 1 Photo taken by J.R. Manning

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North Portal / South Portal Spans 1 and 2 Photo taken by J.R. Manning

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Truss Structure Span 2 Photo taken by J.R. Manning

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North Portal/South Portal Spans 3 and 4 Photo taken by J.R. Manning

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South Portal Span 5 Photo taken by J.R. Manning in May 2011

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Centennial Bridge This bridge crosses the Mississippi River from Rock Island, Illinois to Davenport, Iowa. Photo taken by Quinn Phelan in March 2009 Enlarge

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Looking North From Rock Island, Illinois. Photo taken by Quinn Phelan in March 2009 Enlarge

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Visitor Center The bridge has its own Visitor Center. But it was closed on a cold March 3, 2009 day. Photo taken by Quinn Phelan in March 2009 Enlarge

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As Seen From Downtown Rock Island Caught this from a tall building in Rock Island looking north. Photo taken by Quinn Phelan in March 2009 Enlarge

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Photo taken by Dave Sebben View this photo on Flickr

Map 

Bridge History & Facts 

Go to this link for some interesting facts...

http://en.wikipedia.org/wiki/Rock_Island_Centennial_Bridge

Facts 

Overview

Steel through arch bridge over the Mississippi River on US 67 between Davenport and Rock Island

Location

Rock Island, Scott County, Iowa, and Rock Island County, Illinois

Status

Open to traffic

History

Completed July 12, 1940; tolls removed May 2, 2003; rehabilitated 1996

Builder

- American Bridge Co. of New York

Design

This bridge is a major river span and was the first tied-arch span across the Mississippi River. The bridge was fabricated, and the superstructure built, by American Bridge Company, New York, one of the largest bridge companies in American history. The bridge's designer, Ned L. Ashton, was one of Iowa's most influential engineers.

Dimensions

Length of largest span: 538.1 ft.
Total length: 3,854.2 ft.
Deck width: 45.9 ft.

Approximate latitude, longitude

+41.51517, -90.58163   (decimal degrees)
41°30'55" N, 90°34'54" W   (degrees°minutes'seconds")

Approximate UTM coordinates

15/701804/4598771 (zone/easting/northing)

USGS topographic map

Davenport East

Inventory numbers

IA 47020 (Iowa bridge number)
BH 37423 (Bridgehunter.com ID)

Inspection (as of 10/2008)

Deck condition rating: Good (7 out of 9)
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 43.5 (out of 100)

Average daily traffic (as of 2009)

26,300

Categories 

Update Log 

• October 8, 2011: Photo imported by Luke Harden
• July 21, 2011: New photos from J.R. Manning
• March 25, 2009: New photo from Quinn Phelan
• March 3, 2009: Essay added by Quinn Phelan
• September 13, 2008: Added by J.R. Manning

Sources 

• J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
• HAER IA-73 - Centennial Bridge
• Quinn Phelan - qphelan [at] earthlink [dot] net
• Wikipedia
• Luke Harden - lmharden [at] iastate [dot] edu

Comments