Structure 18C039134900500 · Klamath County, OR

Sevenmile Road over Drain Ditch

Carries Sevenmile Road over Drain Ditch, 050 Mi F/hwy 62 @ Ft.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
25 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

25 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built197254 years old
Length24.9 ft7.6 m
Daily traffic274counted 2020
Last inspectedMarch 2023every 24 months

Location

StateOregon
CountyKlamath
Location050 Mi F/hwy 62 @ Ft
CarriesSevenmile Road
CrossesDrain Ditch
Coordinates42.66843, -122.05500

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length24.9 ft (7.6 m)
Max Span24.0 ft (7.3 m)
Deck Width32.2 ft (9.8 m)
Deck Area74.5 sq m
Main Spans1
Year Built1972

Traffic

Avg Daily Traffic274 (2020)
Truck Traffic15%
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 Number18C039134900500

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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