Structure 17384 059400000 · Morrow County, OR

Bunker Hill Road over Willow Creek EB

Carries Bunker Hill Road over Willow Creek EB, 0.10 Mi W Of HWY 74.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

37 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 slab bridge.

Built199630 years old
Length37.1 ft11.3 m
Daily traffic171counted 2020
Last inspectedAugust 2024every 24 months

Location

StateOregon
CountyMorrow
Location0.10 Mi W Of HWY 74
CarriesBunker Hill Road
CrossesWillow Creek EB
Coordinates45.39749, -119.61114

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length37.1 ft (11.3 m)
Max Span33.1 ft (10.1 m)
Deck Width32.2 ft (9.8 m)
Deck Area110.7 sq m
Main Spans1
Year Built1996

Traffic

Avg Daily Traffic171 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number17384 059400000

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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