N2120 over Creek

Good

Washita County, Oklahoma · 2N 1.8E Burns Flats · Structure no. 286890000000000

Built: 2007; 18 years old
Condition: Good; inspected March 2023
Type: Culvert; Steel
Length: 25 ft; 2 main spans
Daily traffic: 300; 2022 count
Owner: County; County Highway Agency

About this bridge

N2120 over Creek is a steel culvert carrying N2120 over Creek in Washita County, Oklahoma. It was built in 2007, so it is 18 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 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 300 vehicles a day, roughly 10% of them trucks, projected to reach 480 by 2042. The structure is 25 ft (7.6 m) long and 215 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN2120

CrossesCreek

Location2N 1.8E Burns Flats

RouteCounty Highway N2120

CountyWashita County

StateOklahoma

Coordinates35.37666, -99.20565

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	7 Good	Some minor problems.
Culvert	7 Good	Some minor problems.

Last inspectionMarch 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation7: Better than present minimum criteria

Deck geometry9: Superior to present desirable criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating60 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialSteel

DeckNot applicable

Main spans2

Design loadHS 20

Structure length25 ft (7.6 m)

Longest span8 ft (2.4 m)

Deck width215 ft (65.5 m)

Roadway width213 ft (64.9 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2022)

Projected traffic480 by 2042

Trucks10%

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 proposedReplacement because of substandard load-carrying capacity or roadway geometry

Estimated improvement cost$300,000

NavigationNo navigation control on waterway

Frequently asked questions

When was N2120 over Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is N2120 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 March 2023.

How much traffic does N2120 over Creek carry?

About 300 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2120 over Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m) and a deck 215 ft wide.

Who owns N2120 over Creek?

It is owned by the County Highway Agency.