US 12 over Clwater R.;nprr;arrow Br

Fair Condition54 years old4,900 vehicles/day

Location

StateIdaho
CountyNez Perce
Location10.4 E. Lewiston
CarriesUS 12
CrossesClwater R.;nprr;arrow Br
Coordinates46.47156, -116.77336

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure5 (Fair)
Channel/Waterway7 (Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1248.0 ft (380.4 m)
Max Span250.0 ft (76.2 m)
Deck Width44.0 ft (13.4 m)
Deck Area5097.4 sq m
Main Spans8
Year Built1972

Traffic

Avg Daily Traffic4,900 (2023)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number000000000010390

Nearby Bridges