Structure 309650000000000 · McClain County, OK

Ladd Rd. over I-35 Under

Carries Ladd Rd. over I-35 Under, 5.9 S Of Cleveland C/l.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure9/9 · Excellent
Substructure9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT333 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 9/9Substructure 9/9

333 ft end to end, longest span 115 ft: about 5 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.

Built20206 years old
Length332.7 ft101.4 m
Daily traffic1,100counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateOklahoma
CountyMcClain
Location5.9 S Of Cleveland C/l
CarriesLadd Rd.
CrossesI-35 Under
Coordinates35.11702, -97.44358

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length332.7 ft (101.4 m)
Max Span115.2 ft (35.1 m)
Deck Width42.3 ft (12.9 m)
Deck Area1308.1 sq m
Main Spans4
Year Built2020

Traffic

Avg Daily Traffic1,100 (2022)
Truck Traffic13%
Lanes On Bridge2
Lanes Under Bridge6

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 Number309650000000000

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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