US Bridges

N2530 over Eagle Chief Creek

Good

Alfalfa County, Oklahoma · 2W .9S of Carmen · Structure no. 226710000000000

Built
1990
35 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
228 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N2530 over Eagle Chief Creek is a prestressed concrete stringer/multi-beam or girder carrying N2530 over Eagle Chief Creek in Alfalfa 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 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 228 ft (69.5 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN2530
CrossesEagle Chief Creek
Location2W .9S of Carmen
RouteCounty Highway N2530
Coordinates36.56483, -98.49814
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 rating55 US tons
Inventory rating33 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length228 ft (69.5 m)
Longest span75 ft (22.9 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 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 closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$768,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2530 over Eagle Chief Creek built?

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

What condition is N2530 over Eagle Chief 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 July 2023.

How much traffic does N2530 over Eagle Chief Creek carry?

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

How long is N2530 over Eagle Chief Creek?

The structure is 228 ft (69.5 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.

Who owns N2530 over Eagle Chief Creek?

It is owned by the County Highway Agency.