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South 100 West over Logan River

Cache County, Utah · rated Good in the 2025 National Bridge Inventory

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

South 100 West over Logan River in Cache County, Utah, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2023, making it 2 years old at the 2025 inventory.
It carries about 1,000 vehicles a day (traffic count year 2023).
Its listed owner is a city or municipal highway agency.
It is one of 17 of the 96 inventoried bridges in Cache County rated good (17.7%); 7 (7.3%) 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	Prestressed concrete stringer or multi-beam girder
Length	about 149 ft
Location	700 S 100 W Logan
NBI structure number	005066F
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
US-91 (SR-91) over Logan River	1918	44,297	Fair
US-91 (SR-91) over Blacksmith Fork River	1958	21,964	Good
SR-252 1000 W.St. over Logan River	1978	17,023	Fair
US-91 (SR-91) over Little Bear River	1947	16,370	Fair
1000 South St. over Logan River	1994	14,995	Fair
SR-165 over Blacksmith Fork River	1991	14,329	Good