N2780 over Creek

Good

Jefferson County, Oklahoma · .7S of JCT N2780/E2060 · Structure no. 319410000000000

Built: 2021; 4 years old
Condition: Good; inspected May 2023
Type: Culvert; Concrete
Length: 38 ft; 3 main spans
Daily traffic: 229; 2022 count
Owner: County; County Highway Agency

About this bridge

N2780 over Creek is a concrete culvert carrying N2780 over Creek in Jefferson County, Oklahoma. It was built in 2021, so it is 4 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 229 vehicles a day, roughly 15% of them trucks, projected to reach 366 by 2042. The structure is 38 ft (11.6 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN2780

CrossesCreek

Location.7S of JCT N2780/E2060

RouteCounty Highway N2780

CountyJefferson County

StateOklahoma

Coordinates34.0175, -98.035

Functional classRural Major Collector

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	8 Very Good	No problems noted.
Culvert	8 Very Good	No problems noted.

Last inspectionMay 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation8: Equal to present desirable criteria

Deck geometry7: Better than present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is

Operating rating60.1 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans3

Design loadH 20

Structure length38 ft (11.6 m)

Longest span12 ft (3.7 m)

Deck width34 ft (10.4 m)

Roadway width32 ft (9.8 m)

Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic229 (2022)

Projected traffic366 by 2042

Trucks15%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.7 mi (6 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 proposedNone recorded

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was N2780 over Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is N2780 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 May 2023.

How much traffic does N2780 over Creek carry?

About 229 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N2780 over Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m) and a deck 34 ft wide.

Who owns N2780 over Creek?

It is owned by the County Highway Agency.