SR 20 over Twisp R

Good Condition26 years old4,361 vehicles/day

Location

StateWashington
CountyOkanogan
Location38.8 E Chelan Co
CarriesSR 20
CrossesTwisp R
Coordinates48.36717, -120.12247

Condition Ratings

Overall ConditionGood
Deck7 (Good)
Superstructure7 (Good)
Substructure8 (Very Good)
Channel/Waterway8 (Very Good)
Scour Critical5 — Stable for scour

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length198.2 ft (60.4 m)
Max Span190.9 ft (58.2 m)
Deck Width45.3 ft (13.8 m)
Deck Area833.5 sq m
Main Spans1
Year Built2000

Traffic

Avg Daily Traffic4,361 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last Inspection723
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Structure Number0015714A0000000

Nearby Bridges

SR 20 over H W Channel Methow R 0.4 mi Good SR 20 over Methow River 0.6 mi Good SR 20 over H W Channel Methow R 1.1 mi Good Fas Route A240 over Twisp River 1.2 mi Poor County Road 1075 over Twisp River 3.7 mi Good County Road 1600 over Beaver Creek 3.7 mi Poor SR 20 over Beaver Creek 3.8 mi Good SR 153 over Beaver Creek 3.9 mi Good