Structure 85089000000000 · Lewis County, WA

Fas 1027 over Bn Rr Gold ST Northup S

Carries Fas 1027 over Bn Rr Gold ST Northup S, 00.0 N Jct. Summa S.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,007 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

1,007 ft end to end, longest span 73 ft: about 2.8 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 slab bridge.

Built197155 years old
Length1006.9 ft306.9 m
Daily traffic5,843counted 2022
Last inspectedNovember 2023every 24 months

Location

StateWashington
CountyLewis
Location00.0 N Jct. Summa S
CarriesFas 1027
CrossesBn Rr Gold ST Northup S
Coordinates46.70842, -122.95786

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length1006.9 ft (306.9 m)
Max Span73.2 ft (22.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area3099.7 sq m
Main Spans31
Year Built1971

Traffic

Avg Daily Traffic5,843 (2022)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number085089000000000

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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