Structure 186661134900380 · Klamath County, OR

Sevenmile Road over Blue Spring Ditch

Carries Sevenmile Road over Blue Spring Ditch, 020 Mi West Of Weed Road.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

41 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.

Built199828 years old
Length41.0 ft12.5 m
Daily traffic371counted 2020
Last inspectedMarch 2023every 24 months

Location

StateOregon
CountyKlamath
Location020 Mi West Of Weed Road
CarriesSevenmile Road
CrossesBlue Spring Ditch
Coordinates42.66834, -122.03249

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length41.0 ft (12.5 m)
Max Span40.0 ft (12.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area122.5 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic371 (2020)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number186661134900380

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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