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Home > Iowa > Marshalltown vicinity > Rock Valley Bridge, Spanning North Timber Creek at Old U.S. Highway 30, Marshalltown, Marshall County, IA



B&W Photos
Overall View Of Bridge And Lincoln Highway, Showing North Approach To Bridge
HB412128
Overall View Of Bridge And Lincoln Highway, Showing North Approach To Bridge
Overall View Of Bridge And Lincoln Highway, Showing South Approach To Bridge
HB412129
Overall View Of Bridge And Lincoln Highway, Showing South Approach To Bridge
Overall View Of Bridge And North Timber Creek
HB412130
Overall View Of Bridge And North Timber Creek
West Web Of Bridge And Portion Of North Approach Guardrail, From Streambank
HB412131
West Web Of Bridge And Portion Of North Approach Guardrail, From Streambank
West Web Of Bridge, From Streambank
HB412132
West Web Of Bridge, From Streambank
West Web Of Bridge, From Streambank
HB412133
West Web Of Bridge, From Streambank
Bridge Arches And Deck, From Roadway
HB412134
Bridge Arches And Deck, From Roadway
East Arch, From Roadway
HB412135
East Arch, From Roadway
Detail Of East Arch, From Roadway, Showing Arch Rib, Articulated Hanger And Guardrail
HB412136
Detail Of East Arch, From Roadway, Showing Arch Rib, Articulated Hanger And Guardrail
Detail Of West Arch, From Roadway, Showing Arch Rib, Hangers And Guardrail
HB412137
Detail Of West Arch, From Roadway, Showing Arch Rib, Hangers And Guardrail
Detail Of West Web, From Streambank, Showing Arch Rib, Hangers, Floor Beams And Guardrail
HB412138
Detail Of West Web, From Streambank, Showing Arch Rib, Hangers, Floor Beams And Guardrail
Detail Of North Abutment, From Beneath, Showing Arch Rib And Floor Beam
HB412139
Detail Of North Abutment, From Beneath, Showing Arch Rib And Floor Beam


Data Pages


Photo Caption Pages


Item Title


Location
Spanning North Timber Creek at Old U.S. Highway 30, Marshalltown vicinity, IA

Find maps of Marshalltown, IA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER IA-29
Building/structure dates: 1918 initial construction
Significance: 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.

Related Names
Alexander & Higbee
Marsh Engineering Company
Marsh, James B.


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. OVERALL VIEW OF BRIDGE AND LINCOLN HIGHWAY, SHOWING NORTH APPROACH TO BRIDGE. VIEW TO SOUTH.
2. OVERALL VIEW OF BRIDGE AND LINCOLN HIGHWAY, SHOWING SOUTH APPROACH TO BRIDGE. VIEW TO NORTH.
3. OVERALL VIEW OF BRIDGE AND NORTH TIMBER CREEK. VIEW TO SOUTHWEST.
4. WEST WEB OF BRIDGE AND PORTION OF NORTH APPROACH GUARDRAIL, FROM STREAMBANK. VIEW TO SOUTHWEST.
5. WEST WEB OF BRIDGE, FROM STREAMBANK. VIEW TO SOUTHWEST.
6. WEST WEB OF BRIDGE, FROM STREAMBANK. VIEW TO SOUTHWEST.
7. BRIDGE ARCHES AND DECK, FROM ROADWAY. VIEW TO NORTH.
8. EAST ARCH, FROM ROADWAY. VIEW TO NORTH.
9. DETAIL OF EAST ARCH, FROM ROADWAY, SHOWING ARCH RIB, ARTICULATED HANGER AND GUARDRAIL. VIEW TO SOUTHEAST.
10. DETAIL OF WEST ARCH, FROM ROADWAY, SHOWING ARCH RIB, HANGERS AND GUARDRAIL. VIEW TO SOUTH.
11. DETAIL OF WEST WEB, FROM STREAMBANK, SHOWING ARCH RIB, HANGERS, FLOOR BEAMS AND GUARDRAIL. VIEW TO NORTHEAST.
12. DETAIL OF NORTH ABUTMENT, FROM BENEATH, SHOWING ARCH RIB AND FLOOR BEAM. VIEW TO NORTHEAST.


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