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.
Length of largest span: 538.1 ft.
Total length: 3,854.2 ft. (0.7 mi.)
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
USGS topographic map
IA 47020 (Iowa bridge number)
BH 37423 (Bridgehunter.com ID)
Inspection (as of 07/2010)
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: 43.8 (out of 100)
Average daily traffic (as of 2011)
September 8, 2012: Photo imported by Luke Harden
August 18, 2012: Updated by Luke Harden: Added builders.