US Bridges

Co. Rd. Onapa RD over U.S. 69 under

Fair

McIntosh County, Oklahoma · 3.8 S JCT I-40 · Structure no. 187670000000000

Built
1974
51 years old
Condition
Fair
inspected October 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
230 ft
2 main spans
Daily traffic
100
2022 count
Owner
State
State Highway Agency

About this bridge

Co. Rd. Onapa RD over U.S. 69 under is a steel continuous girder and floorbeam system carrying Co. Rd. Onapa RD over U.S. 69 under in McIntosh County, Oklahoma. It was built in 1974, so it is 51 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 230 ft (70.1 m) long and 38 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCo. Rd. Onapa RD
CrossesU.S. 69 under
Location3.8 S JCT I-40
RouteCounty Highway 0
CountyMcIntosh County
StateOklahoma
Coordinates35.40586, -95.55943
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span113 ft (34.4 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Co. Rd. Onapa RD over U.S. 69 under built?

It was built in 1974, making it 51 years old in 2025.

What condition is Co. Rd. Onapa RD over U.S. 69 under in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Co. Rd. Onapa RD over U.S. 69 under carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is Co. Rd. Onapa RD over U.S. 69 under?

The structure is 230 ft (70.1 m) long with a longest span of 113 ft (34.4 m) and a deck 38 ft wide.

Who owns Co. Rd. Onapa RD over U.S. 69 under?

It is owned by the State Highway Agency.