Structure 2450A0000000 · Okanogan County, WA

SR 153 over Methow River

Carries SR 153 over Methow River, 11.9 N Jct US 97.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure6/9 · Satisfactory
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT476 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 6/9Substructure 5/9

476 ft end to end, longest span 77 ft: about 7 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built193987 years old
Length476.0 ft145.1 m
Daily traffic1,847counted 2023
Last inspectedOctober 2023every 24 months

Location

StateWashington
CountyOkanogan
Location11.9 N Jct US 97
CarriesSR 153
CrossesMethow River
Coordinates48.13783, -120.01523

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length476.0 ft (145.1 m)
Max Span77.1 ft (23.5 m)
Deck Width30.8 ft (9.4 m)
Deck Area1363.9 sq m
Main Spans9
Year Built1939

Traffic

Avg Daily Traffic1,847 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number0002450A0000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges