Structure 8491A0000000 · Lincoln County, WA

SR 21 over Lake CR

Carries SR 21 over Lake CR, 6.4 N Jct SR 28.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 slab bridge.

Built196957 years old
Length24.0 ft7.3 m
Daily traffic255counted 2023
Last inspectedApril 2021every 48 months

Location

StateWashington
CountyLincoln
Location6.4 N Jct SR 28
CarriesSR 21
CrossesLake CR
Coordinates47.41813, -118.68706

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length24.0 ft (7.3 m)
Max Span22.0 ft (6.7 m)
Deck Width35.1 ft (10.7 m)
Deck Area78.1 sq m
Main Spans1
Year Built1969

Traffic

Avg Daily Traffic255 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0008491A0000000

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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