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State Route 70 over Spanish Creek

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

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

State Route 70 over Spanish Creek in Plumas 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 1964, making it 61 years old at the 2025 inventory.
It carries about 6,700 vehicles a day (traffic count year 2009).
Its listed owner is the state highway agency.
It is one of 117 of the 165 inventoried bridges in Plumas County rated fair (70.9%); 5 (3.0%) 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 286 ft
Location	02-plu-070-42.45
NBI structure number	09 0018
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Gulling Street over UP RR & BNSF Ry	1954	10,046	Fair
Gulling Street over Middle Fork Feather Riv	1954	10,046	Poor
State Route 70 over Clear Stream	1937	6,700	Good
State Route 70 over Humbug Creek	1969	6,200	Good
State Route 36 over North Fork Feather River	1966	5,500	Fair
State Route 36 over Bailey Creek	1966	5,000	Good