Structure 3088 046 00598 · Clatsop County, OR

Or 53 (hwy 46) over Jack Horner Creek

Carries Or 53 (hwy 46) over Jack Horner Creek, 030 Mi SW Summit.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

76 ft end to end, longest span 19 ft. 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.

Built195175 years old
Length76.1 ft23.2 m
Daily traffic452counted 2022
Last inspectedMay 2023every 24 months

Location

StateOregon
CountyClatsop
Location030 Mi SW Summit
CarriesOr 53 (hwy 46)
CrossesJack Horner Creek
Coordinates45.83261, -123.77602

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length76.1 ft (23.2 m)
Max Span19.0 ft (5.8 m)
Deck Width24.0 ft (7.3 m)
Deck Area169.4 sq m
Main Spans4
Year Built1951

Traffic

Avg Daily Traffic452 (2022)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number03088 046 00598

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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