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1800TH St over W Fork W Nishnabotna

Shelby County, Iowa · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

1800TH St over W Fork W Nishnabotna in Shelby County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
It was built in 2017, making it 8 years old at the 2025 inventory.
It carries about 26 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 78 of the 207 inventoried bridges in Shelby County rated good (37.7%); 18 (8.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Concrete stringer or multi-beam girder
Length	about 216 ft
Location	80838
NBI structure number	000000000306201
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.

Bridge	Built	Vehicles/day	Condition
US 59 over Drainage Ditch	1966	5,000	Fair
US 59 over Drainage Ditch	1970	4,940	Fair
US 59 over West Nishnabotna River	1970	4,940	Fair
US 59 over Jensen Creek	1968	4,680	Fair
Ia 44 over West Nishnabotna River	1978	3,960	Fair
US 59 over Lyon Creek	1970	3,240	Fair