Structure 269890000000000 · Cimarron County, OK

N0390 over Dry Lake River

Carries N0390 over Dry Lake River, .5 South Us56.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT130 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 130 ft across. 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, so those are drawn as typical for a culvert.

Built200323 years old
Length129.9 ft39.6 m
Daily traffic24counted 2022
Last inspectedOctober 2023every 24 months

Location

StateOklahoma
CountyCimarron
Location.5 South Us56
CarriesN0390
CrossesDry Lake River
Coordinates36.77739, -102.31979

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length129.9 ft (39.6 m)
Max Span129.9 ft (39.6 m)
Deck Area312.8 sq m
Main Spans1
Year Built2003

Traffic

Avg Daily Traffic24 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number269890000000000

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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