Structure 82302000000000 · Cowlitz County, WA

East Cc ST over Lewis River

Carries East Cc ST over Lewis River, 0.14 E SR 503 (mp 54.31).

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT595 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

595 ft end to end, longest span 223 ft: about 1.7 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 multi-beam bridge.

Built196660 years old
Length595.1 ft181.4 m
Daily traffic6,628counted 2015
Last inspectedMarch 2023every 24 months

Location

StateWashington
CountyCowlitz
Location0.14 E SR 503 (mp 54.31)
CarriesEast Cc ST
CrossesLewis River
Coordinates45.90583, -122.73722

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length595.1 ft (181.4 m)
Max Span223.1 ft (68 m)
Deck Width34.1 ft (10.4 m)
Deck Area1886.6 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic6,628 (2015)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number082302000000000

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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