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950 150TH St over West Otter Creek Dd 26

Hancock County, Iowa · rated Fair in the 2025 National Bridge Inventory

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

950 150TH St over West Otter Creek Dd 26 in Hancock County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1976, making it 49 years old at the 2025 inventory.
It carries about 41 vehicles a day (traffic count year 2022).
Its listed owner is the county highway agency.
It is one of 53 of the 135 inventoried bridges in Hancock County rated fair (39.3%); 27 (20.0%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 57 ft
Location	094251001
NBI structure number	000000000172781
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 18 over E Branch Iowa River	2002	6,500	Good
US 18 over Drainage Ditch	1958	5,200	Fair
US 18 over West Fork Iowa River	1958	5,200	Fair
B-14 over Private Dr	1972	3,502	Fair
US 18 over Boone River	1959	2,980	Fair
US 18 over Branch Boone River	1959	2,980	Fair