Structure 208460000000000 · Oklahoma County, OK

I-35 NB over 108th St. Under

Carries I-35 NB over 108th St. Under, 2.8 Mi N I-44 & I-35.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT202 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

202 ft end to end, longest span 100 ft: about 3 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.

Built198442 years old
Length202.1 ft61.6 m
Daily traffic42,350counted 2022
Last inspectedJune 2024every 24 months

Location

StateOklahoma
CountyOklahoma
Location2.8 Mi N I-44 & I-35
CarriesI-35 NB
Crosses108th St. Under
Coordinates35.57987, -97.44202

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length202.1 ft (61.6 m)
Max Span100.1 ft (30.5 m)
Deck Width70.9 ft (21.6 m)
Deck Area1330.6 sq m
Main Spans2
Year Built1984

Traffic

Avg Daily Traffic42,350 (2022)
Truck Traffic12%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number208460000000000

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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