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Interstate 80 EB over UP BNSF Amtrak Truckee R

Nevada County, California · rated Fair in the 2025 National Bridge Inventory

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

Interstate 80 EB over UP BNSF Amtrak Truckee R in Nevada County, California, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1989, making it 36 years old at the 2025 inventory.
It carries about 14,000 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 55 of the 137 inventoried bridges in Nevada County rated fair (40.1%); 19 (13.9%) 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 multiple box beam
Length	about 563 ft
Location	03-nev-080-20.23
NBI structure number	17 0058R
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
State Route 20 over Idaho-maryland Road	1969	47,000	Fair
State Route 20 over Wolf Creek	1969	47,000	Good
State Route 20 over SR 174 (colfax) Auburn	1970	43,000	Good
State Route 20 over Bank Street	1969	34,500	Good
State Route 20 over Bennett Street	1969	34,500	Fair
Interstate 80 over Donner Pass Road	1991	34,000	Fair