US Bridges

N2880 over Salt Fork Arkansas River

Fair

Grant County, Oklahoma · 4.2N of US81/US64 · Structure no. 226840000000000

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
904 ft
9 main spans
Daily traffic
160
2022 count
Owner
County
County Highway Agency

About this bridge

N2880 over Salt Fork Arkansas River is a prestressed concrete stringer/multi-beam or girder carrying N2880 over Salt Fork Arkansas River in Grant County, Oklahoma. It was built in 1990, so it is 35 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 160 vehicles a day, roughly 15% of them trucks, projected to reach 256 by 2042. The structure is 904 ft (275.4 m) long and 30 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesN2880
CrossesSalt Fork Arkansas River
Location4.2N of US81/US64
RouteCounty Highway N2880
CountyGrant County
StateOklahoma
Coordinates36.72892, -97.87576
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length904 ft (275.4 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2022)
Projected traffic256 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 N2880 over Salt Fork Arkansas River built?

It was built in 1990, making it 35 years old in 2025.

What condition is N2880 over Salt Fork Arkansas River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does N2880 over Salt Fork Arkansas River carry?

About 160 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N2880 over Salt Fork Arkansas River?

The structure is 904 ft (275.4 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns N2880 over Salt Fork Arkansas River?

It is owned by the County Highway Agency.