Structure 82413000000000 · Walla Walla County, WA

Five Mile RD over Mill Creek

Carries Five Mile RD over Mill Creek, 02.62nw Scenic Loop.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT120 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

120 ft end to end, longest span 40 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.

Built195373 years old
Length120.1 ft36.6 m
Daily traffic340counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateWashington
CountyWalla Walla
Location02.62nw Scenic Loop
CarriesFive Mile RD
CrossesMill Creek
Coordinates46.08574, -118.22832

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length120.1 ft (36.6 m)
Max Span40.0 ft (12.2 m)
Deck Width28.9 ft (8.8 m)
Deck Area322.1 sq m
Main Spans3
Year Built1953

Traffic

Avg Daily Traffic340 (2020)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number082413000000000

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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