US Bridges

N2580 over West Clay Creek Trib

Good

Alfalfa County, Oklahoma · 3E 1.9N of Carmen · Structure no. 332100000000000

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Culvert
Steel
Length
21 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N2580 over West Clay Creek Trib is a steel culvert carrying N2580 over West Clay Creek Trib in Alfalfa County, Oklahoma. It was built in 2023, so it is 2 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 10% of them trucks, projected to reach 160 by 2042. The structure is 21 ft (6.4 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN2580
CrossesWest Clay Creek Trib
Location3E 1.9N of Carmen
RouteCounty Highway N2580
Coordinates36.60772, -98.41464
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.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.4 m)
Longest span8 ft (2.4 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N2580 over West Clay Creek Trib built?

It was built in 2023, making it 2 years old in 2025.

What condition is N2580 over West Clay Creek Trib 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 N2580 over West Clay Creek Trib carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2580 over West Clay Creek Trib?

The structure is 21 ft (6.4 m) long with a longest span of 8 ft (2.4 m) and a deck 22 ft wide.

Who owns N2580 over West Clay Creek Trib?

It is owned by the County Highway Agency.