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300 West Street over Big Cottonwood Creek

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

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

300 West Street over Big Cottonwood Creek in Salt Lake 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 7,900 vehicles a day (traffic count year 2013).
Its listed owner is a city or municipal highway agency.
It is one of 147 of the 666 inventoried bridges in Salt Lake County rated good (22.1%); 29 (4.4%) 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 multiple box beam
Length	about 43 ft
Location	4125 S. 300 W. Murray
NBI structure number	035256F
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-15 (SR-15) Nbl over Andy AVE.(2250 S.)&	2000	268,370	Fair
I-15 NB Col-dist over Rt.pond .& Uta Tracks	1999	268,370	Good
I-15NB Col-dist.rp over Drainage Water Ret. Pond	2000	268,370	Good
I-15 (SR-15) Nbl over 2100 South Street	2000	268,370	Fair
I-15 NB Col-dist. over 2100 South Street	1999	268,370	Fair
I-15 (SR-15) Sbl over Andy AVE.(2250 S.)&	1999	268,370	Fair