Historic Bridges of the U.S. | Rock Valley Bridge

Photos

< Previous (1 of 12) Next >

Overall View Of Bridge And Lincoln Highway, Showing North Approach To Bridge. View To South

Photo by Clayton B. Fraser, September 1988, for HAER

< Previous (2 of 12) Next >

Overall View Of Bridge And Lincoln Highway, Showing South Approach To Bridge. View To North

Photo by Clayton B. Fraser, September 1988, for HAER

< Previous (3 of 12) Next >

Overall View Of Bridge And North Timber Creek. View To Southwest

Photo by Clayton B. Fraser, September 1988, for HAER

< Previous (4 of 12) Next >

West Web Of Bridge And Portion Of North Approach Guardrail, From Streambank. View To Southwest

Photo by Clayton B. Fraser, September 1988, for HAER

< Previous (5 of 12) Next >

West Web Of Bridge, From Streambank. View To Southwest

Photo by Clayton B. Fraser, September 1988, for HAER

Overview: Lost Marsh arch bridge over North Timber Creek on Shady Oaks Road, Old Lincoln Highway in Le Grand
Location: Le Grand, Marshall County, Iowa
Status: Lost
History: Built 1918; Demolished circa 2000
Builders: - Alexander and Higby
- Marsh Engineering Co. of Des Moines, Iowa (Designer)
Design: "The Rock Valley Bridge represents the culmination of an extensive concrete bridge construction program undertaken by Marshall County in the 1910s. It is the only span built by the county on the Lincoln Highway, America's first transcontinental route. This medium-span, reinforced concrete rainbow arch is a representative example of the hundreds of such structures designed and marketed by their inventor, Des Moines engineer James B. Marsh. Dozens of rainbow arches were built in Iowa in the 1910s, 20s, and 30s. Now only eleven remain, most in deteriorating condition."
Clayton B. Fraser
Principal, FRASERdesign
Loveland, Colorado 80537
October 1988
`
Dimensions: Length of largest span: 110 ft.
Total length: 158 ft.
Deck width: 20 ft.
Approximate latitude, longitude: +42.01330, -92.85625 (decimal degrees)
42°00'48" N, 92°51'23" W (degrees°minutes'seconds")
Approximate UTM coordinates: 15/511902/4651262 (zone/easting/northing)
USGS topographic map: Le Grand
Inventory number: BH 37403 (Bridgehunter.com ID)