Structure 8494A0000000 · Garfield County, WA

SR 127 over Snake R Central Ferry

Carries SR 127 over Snake R Central Ferry, 9.6 N Jct US 12.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,831 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

1,831 ft end to end, longest span 520 ft: about 5.1 football fields. 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 through arch.

Built196957 years old
Length1831.0 ft558.1 m
Daily traffic868counted 2023
Last inspectedJuly 2024every 24 months

Location

StateWashington
CountyGarfield
Location9.6 N Jct US 12
CarriesSR 127
CrossesSnake R Central Ferry
Coordinates46.62403, -117.79653

Physical Characteristics

MaterialSteel Continuous
DesignArch - Thru
Total Length1831.0 ft (558.1 m)
Max Span520.0 ft (158.5 m)
Deck Width34.1 ft (10.4 m)
Deck Area5804.2 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic868 (2023)
Truck Traffic29%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number0008494A0000000

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.

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