Structure 19906 007 17457 · Harney County, OR

US 20 (hwy 007) over Mid Fork Malheur River

Carries US 20 (hwy 007) over Mid Fork Malheur River, 5.6 Mi W Malheur Co Line.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT190 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

190 ft end to end, longest span 94 ft: about 3 semi-trucks nose to tail. 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 box-beam bridge.

Built200422 years old
Length189.6 ft57.8 m
Daily traffic1,676counted 2022
Last inspectedJune 2023every 24 months

Location

StateOregon
CountyHarney
Location5.6 Mi W Malheur Co Line
CarriesUS 20 (hwy 007)
CrossesMid Fork Malheur River
Coordinates43.78538, -118.33169

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length189.6 ft (57.8 m)
Max Span94.2 ft (28.7 m)
Deck Width47.9 ft (14.6 m)
Deck Area843.9 sq m
Main Spans2
Year Built2004

Traffic

Avg Daily Traffic1,676 (2022)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number19906 007 17457

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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