6766C over Creek

Good

Seminole County, Oklahoma · .2 N & .5 E of Konawa · Structure no. 281780000000000

Built: 1940; 85 years old
Condition: Good; inspected June 2023
Type: Culvert; Concrete
Length: 21 ft; 2 main spans
Daily traffic: 600; 2022 count
Owner: County; County Highway Agency

About this bridge

6766C over Creek is a concrete culvert carrying 6766C over Creek in Seminole County, Oklahoma. It was built in 1940, so it is 85 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 600 vehicles a day, roughly 10% of them trucks, projected to reach 960 by 2042. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries6766C

CrossesCreek

Location.2 N & .5 E of Konawa

RouteCounty Highway 6766C

CountySeminole County

StateOklahoma

Coordinates34.97063, -96.74394

Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert	7 Good	Some minor problems.

Last inspectionJune 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; action required to protect exposed foundations

Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is

Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is

Approach roadway alignment8: Equal to present desirable criteria

Operating rating36 US tons

Inventory rating21.1 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans2

Design loadHS 20

Structure length21 ft (6.3 m)

Longest span10 ft (3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2022)

Projected traffic960 by 2042

Trucks10%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed1.9 mi (3 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency

Maintained byCounty 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$1.2 million

NavigationNo navigation control on waterway

Frequently asked questions

When was 6766C over Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is 6766C over Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does 6766C over Creek carry?

About 600 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is 6766C over Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns 6766C over Creek?

It is owned by the County Highway Agency.