Structure 12970000000000 · McCurtain County, OK

IRR 4560c over Creek

Carries IRR 4560c over Creek, 3.99 N Idabel.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

28 ft end to end, longest span 9 ft. 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.

Built1923rebuilt 1940
Length27.9 ft8.5 m
Daily traffic1,000counted 2022
Last inspectedApril 2023every 24 months

Location

StateOklahoma
CountyMcCurtain
Location3.99 N Idabel
CarriesIRR 4560c
CrossesCreek
Coordinates33.95808, -94.82500

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length27.9 ft (8.5 m)
Max Span8.9 ft (2.7 m)
Deck Width25.9 ft (7.9 m)
Deck Area67.2 sq m
Main Spans3
Year Built1923 (reconstructed 1940)

Traffic

Avg Daily Traffic1,000 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number012970000000000

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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