Centennial Bridge
Photos
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Elevation From West Photo by Joe Elliott, Summer 1995, for HAER |
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Elevation From West Photo by Joe Elliott, Summer 1995, for HAER |
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Elevation, Two Middle Spans, From West Photo by Joe Elliott, Summer 1995, for HAER |
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3/4 View From Southwest Photo by Joe Elliott, Summer 1995, for HAER |
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3/4 View From Deck, From Southeast Photo by Joe Elliott, Summer 1995, for HAER |
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Construction Details Of Arch, From Deck Photo by Joe Elliott, Summer 1995, for HAER |
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Center Toll Booth, From Southeast Photo by Joe Elliott, Summer 1995, for HAER |
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Underside, From North Photo by Joe Elliott, Summer 1995, for HAER |
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Underside, 3/4 View At South End Photo by Joe Elliott, Summer 1995, for HAER |
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Highway Approach, Pylons, From South Photo by Joe Elliott, Summer 1995, for HAER |
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Builders Plate At South End Photo by Joe Elliott, Summer 1995, for HAER |
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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 |
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Looking North From Rock Island, Illinois. Photo taken by Quinn Phelan in March 2009 |
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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 |
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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 |
Facts
- Overview
- Steel through arch bridge over Mississippi River, Railroad and US 61 on US 67 in Davenport
- Status
- Open to traffic
- History
- Built 1940; 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
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Length of largest span: 538.1 ft.
Total length: 3,854.2 ft.
Deck width: 45.9 ft.
- Approximate latitude, longitude
- +41.52500, -90.59167 (decimal degrees)
41°31'30" N, 90°35'30" W (degrees°minutes'seconds") - Approximate UTM coordinates
- 15/700936/4599840 (zone/easting/northing)
- USGS topographic map
- Davenport East
- Inventory number
- BH 37423 (Bridgehunter.com ID)
- Inspection (as of 10/2006)
- Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 43.8 (out of 100) - Average daily traffic (as of 2006)
- 27,200
Update Log
- 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