N0340 over Creek

Good

Cimarron County, Oklahoma · 2.5N of Keyes · Structure no. 289800000000000

Built: 2007; 18 years old
Condition: Good; inspected October 2023
Type: Culvert; Steel
Length: 22 ft; 1 main span
Daily traffic: 100; 2022 count
Owner: County; County Highway Agency

About this bridge

N0340 over Creek is a steel culvert carrying N0340 over Creek in Cimarron 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 100 vehicles a day, roughly 25% of them trucks, projected to reach 160 by 2042. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps

CarriesN0340

CrossesCreek

Location2.5N of Keyes

RouteCounty Highway 430

CountyCimarron County

StateOklahoma

Coordinates36.85083, -102.24444

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 inspectionOctober 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

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

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating36 US tons

Inventory rating21.1 US tons

Structure

Structure typeCulvert

MaterialSteel

DeckNot applicable

Main spans1

Design loadHS 20

Structure length22 ft (6.7 m)

Longest span22 ft (6.7 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)

Projected traffic160 by 2042

Trucks25%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed3.1 mi (5 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 N0340 over Creek built?

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

What condition is N0340 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 October 2023.

How much traffic does N0340 over Creek carry?

About 100 vehicles per day (2022 count), of which roughly 25% are trucks.

How long is N0340 over Creek?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m).

Who owns N0340 over Creek?

It is owned by the County Highway Agency.