Structure 65560000000000 · Bryan County, OK

U.s. 70 over Rock Creek

Carries U.s. 70 over Rock Creek, 11.01 E Jct Sh-78.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

143 ft end to end, longest span 60 ft. 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.

Built1938rebuilt 2017
Length143.0 ft43.6 m
Daily traffic4,200counted 2022
Last inspectedApril 2024every 24 months

Location

StateOklahoma
CountyBryan
Location11.01 E Jct Sh-78
CarriesU.s. 70
CrossesRock Creek
Coordinates34.00736, -96.18301

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length143.0 ft (43.6 m)
Max Span60.0 ft (18.3 m)
Deck Width40.0 ft (12.2 m)
Deck Area531.9 sq m
Main Spans3
Year Built1938 (reconstructed 2017)

Traffic

Avg Daily Traffic4,200 (2022)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number065560000000000

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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