Structure 74600000000000 · Adair County, OK

N4658 (0142c) over Creek

Carries N4658 (0142c) over Creek, 5.6n 4.9e Of SW C/l.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

22 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 multi-beam bridge.

Built194086 years old
Length22.0 ft6.7 m
Daily traffic50counted 2022
Last inspectedJune 2024every 12 months

Location

StateOklahoma
CountyAdair
Location5.6n 4.9e Of SW C/l
CarriesN4658 (0142c)
CrossesCreek
Coordinates35.71917, -94.72083

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length22.0 ft (6.7 m)
Max Span20.0 ft (6.1 m)
Deck Width18.4 ft (5.6 m)
Deck Area37.5 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic50 (2022)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number074600000000000

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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