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400 East Road over U Canal

Jerome County, Idaho · rated Fair in the 2025 National Bridge Inventory

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

400 East Road over U Canal in Jerome County, Idaho, 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 1981, making it 44 years old at the 2025 inventory.
It carries about 50 vehicles a day (traffic count year 2023).
It is one of 81 of the 111 inventoried bridges in Jerome County rated fair (73.0%); 10 (9.0%) 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 tee beam
Length	about 60 ft
Location	3.3 N. 4.0 E. Jerome
NBI structure number	000000000024665
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 84 over N Canal	1966	24,500	Fair
I 84 over C Canal	1966	23,000	Fair
SH 79 over I 84 Eb-wb;s.jerome Ic	1966	15,000	Fair
I 84 Ebl over 400 South Rd Gs 2	2024	14,500	Good
I 84 Wbl over 400 South Rd Gs 2	2024	14,500	Good
I 84 Ebl over US 93;W. Twin Falls Ic	2013	14,500	Fair