Structure 5397A0000000 · Spokane County, WA

SR 27 over Rock Creek

Carries SR 27 over Rock Creek, 0.2 N Jct SR 278.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure7/9 · Good
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 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 7/9Substructure 7/9

142 ft end to end, longest span 60 ft. 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.

Built195769 years old
Length142.1 ft43.3 m
Daily traffic5,713counted 2023
Last inspectedJuly 2024every 24 months

Location

StateWashington
CountySpokane
Location0.2 N Jct SR 278
CarriesSR 27
CrossesRock Creek
Coordinates47.45306, -117.14208

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length142.1 ft (43.3 m)
Max Span60.0 ft (18.3 m)
Deck Width33.5 ft (10.2 m)
Deck Area441.7 sq m
Main Spans3
Year Built1957

Traffic

Avg Daily Traffic5,713 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number0005397A0000000

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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