Structure 80383000000000 · Benton County, WA

Griffin Road over Roza Canal

Carries Griffin Road over Roza Canal, 0.9 N Evans Road.

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
CAR · 15 FT44 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

44 ft end to end. Lengths and the car 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.

Built198145 years old
Length44.0 ft13.4 m
Daily traffic896counted 2016
Last inspectedFebruary 2024every 24 months

Location

StateWashington
CountyBenton
Location0.9 N Evans Road
CarriesGriffin Road
CrossesRoza Canal
Coordinates46.30053, -119.85221

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length44.0 ft (13.4 m)
Max Span44.0 ft (13.4 m)
Deck Width29.9 ft (9.1 m)
Deck Area121.9 sq m
Main Spans1
Year Built1981

Traffic

Avg Daily Traffic896 (2016)
Truck Traffic40%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number080383000000000

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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