US Bridges

N2580 (fas 0209) over Salt Fork Arkansas River

Good

Alfalfa County, Oklahoma · 1.8N of US 64 · Structure no. 231720000000000

Built
1992
33 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
863 ft
9 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N2580 (fas 0209) over Salt Fork Arkansas River is a prestressed concrete stringer/multi-beam or girder carrying N2580 (fas 0209) over Salt Fork Arkansas River in Alfalfa County, Oklahoma. It was built in 1992, so it is 33 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 15% of them trucks, projected to reach 160 by 2042. The structure is 863 ft (263 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesN2580 (fas 0209)
CrossesSalt Fork Arkansas River
Location1.8N of US 64
RouteCounty Highway N2580
Coordinates36.82294, -98.4141
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.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating42 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length863 ft (263 m)
Longest span100 ft (30.5 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$1.9 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N2580 (fas 0209) over Salt Fork Arkansas River built?

It was built in 1992, making it 33 years old in 2025.

What condition is N2580 (fas 0209) over Salt Fork Arkansas River 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 July 2023.

How much traffic does N2580 (fas 0209) over Salt Fork Arkansas River carry?

About 100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N2580 (fas 0209) over Salt Fork Arkansas River?

The structure is 863 ft (263 m) long with a longest span of 100 ft (30.5 m) and a deck 28 ft wide.

Who owns N2580 (fas 0209) over Salt Fork Arkansas River?

It is owned by the County Highway Agency.