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I-15 NB over Union Pacific Railroad

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

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

I-15 NB over Union Pacific Railroad in Juab 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 1985, making it 40 years old at the 2025 inventory.
It carries about 35,000 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 54 of the 60 inventoried bridges in Juab County rated fair (90.0%); 2 (3.3%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 190 ft
Location	North of SR-78 Intchg
NBI structure number	1F 406
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 NB over Deer Crossing	1974	45,000	Fair
I-15 (SR-15) over Salt Creek	1982	43,893	Fair
I-15 (SR-15) Nbl over 700 North Street Nephi	1982	43,893	Fair
I-15 (SR-15) Sbl over 700 North Street Nephi	1982	43,893	Fair
I-15 SB over Deer Crossing	1974	43,829	Fair
I-15 (SR-15) Nbl over Co. Rd. to North Canyon	1974	42,557	Fair