Structure 312040000000000 · Nowata County, OK

N4090 over Opossum Creek

Carries N4090 over Opossum Creek, 4w 1s Of S. Coffeyville.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT105 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

105 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 girder bridge.

Built20179 years old
Length105.0 ft32 m
Daily traffic106counted 2022
Last inspectedMay 2024every 24 months

Location

StateOklahoma
CountyNowata
Location4w 1s Of S. Coffeyville
CarriesN4090
CrossesOpossum Creek
Coordinates36.97598, -95.69662

Physical Characteristics

MaterialPrestressed Concrete
DesignGirder and Floorbeam
Total Length105.0 ft (32 m)
Max Span105.0 ft (32 m)
Deck Width28.9 ft (8.8 m)
Deck Area281.6 sq m
Main Spans1
Year Built2017

Traffic

Avg Daily Traffic106 (2022)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number312040000000000

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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