Structure 169380000000000 · McClain County, OK

I-35 over Adams St. Under

Carries I-35 over Adams St. Under, 1.2 Mi N Jct SH 39.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT107 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

107 ft end to end, longest span 47 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 multi-beam bridge.

Built196759 years old
Length107.0 ft32.6 m
Daily traffic14,950counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateOklahoma
CountyMcClain
Location1.2 Mi N Jct SH 39
CarriesI-35
CrossesAdams St. Under
Coordinates35.01532, -97.37556

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length107.0 ft (32.6 m)
Max Span46.9 ft (14.3 m)
Deck Width40.0 ft (12.2 m)
Deck Area397.7 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic14,950 (2022)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number169380000000000

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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