Structure 258030000000000 · Grant County, OK

N2920 over Creek

Carries N2920 over Creek, 3.7s Of Pond Creek.

Overall conditionPoor

Set by its lowest-rated component: Culvert at 4 of 9.

How ratings work
Culvertsets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 4/9

A culvert 38 ft across with 5 openings. 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, so those are drawn as typical for a culvert.

Built199531 years old
Length38.1 ft11.6 m
Daily traffic450counted 2022
Last inspectedMay 2023every 24 months

Location

StateOklahoma
CountyGrant
Location3.7s Of Pond Creek
CarriesN2920
CrossesCreek
Coordinates36.61680, -97.80387

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length38.1 ft (11.6 m)
Max Span5.9 ft (1.8 m)
Deck Width40.0 ft (12.2 m)
Deck Area141.5 sq m
Main Spans5
Year Built1995

Traffic

Avg Daily Traffic450 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number258030000000000

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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