Structure 6C117 059 00454 · Coos County, OR

County RD 59 over Catching Slough

Carries County RD 59 over Catching Slough, 100 Ft West Sumner Store.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

30 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.

Built197452 years old
Length29.9 ft9.1 m
Daily traffic598counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateOregon
CountyCoos
Location100 Ft West Sumner Store
CarriesCounty RD 59
CrossesCatching Slough
Coordinates43.28277, -124.15207

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width27.9 ft (8.5 m)
Deck Area77.3 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic598 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number6C117 059 00454

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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