Centennial Bridge

Map 

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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

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

Categories 

Update Log 

• September 13, 2008: Added by J.R. Manning

Sources 

• J.R. Manning - thekitchenguy [at] sbcglobal [dot] net
• HAER IA-73 - Centennial Bridge

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