Structure 228520000000000 · Delaware County, OK

Cherokee Tp over Co. Rd. N4520 Under

Carries Cherokee Tp over Co. Rd. N4520 Under, 3.00 Mi E Of C/l.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT153 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

153 ft end to end, longest span 58 ft: about 2 semi-trucks nose to tail. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built199135 years old
Length152.9 ft46.6 m
Daily traffic3,300counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateOklahoma
CountyDelaware
Location3.00 Mi E Of C/l
CarriesCherokee Tp
CrossesCo. Rd. N4520 Under
Coordinates36.21544, -94.95832

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length152.9 ft (46.6 m)
Max Span58.1 ft (17.7 m)
Deck Width42.7 ft (13 m)
Deck Area605.8 sq m
Main Spans3
Year Built1991

Traffic

Avg Daily Traffic3,300 (2022)
Truck Traffic25%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number228520000000000

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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