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I-70 (SR-70) Wbl over SR-161 Intchg. X-road

Millard County, Utah · rated Fair in the 2025 National Bridge Inventory

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

I-70 (SR-70) Wbl over SR-161 Intchg. X-road in Millard County, Utah, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1973 and reconstructed in 1992, making it 52 years old at the 2025 inventory.
It carries about 7,577 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 62 of the 72 inventoried bridges in Millard County rated fair (86.1%); 2 (2.8%) 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 111 ft
Location	SR-161 Int. at Cove Ft.
NBI structure number	4F 193
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-15 (SR-15)NB&SB over Chalk Creek	1972	24,744	Fair
I-15 (SR-15)NB&SB over Chalk Creek Overflow Ch.	1972	24,744	Fair
I-15 (SR-15) Nbl over SR-99 Intchg. X-road	1972	24,744	Fair
I-15 (SR-15) Sbl over SR-99 Intchg. X-road	1972	24,744	Fair
I-15 SB over Dog Valley Access Rd	2022	23,000	Good
I-15 (SR-15) Nbl over Co. Rd. Inter X-road	1966	22,567	Fair