US Bridges

N2550 over Eagle Chief Creek Trib.

Fair

Alfalfa County, Oklahoma · 4.7W & N of Aline · Structure no. 306550000000000

Built
2012
13 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N2550 over Eagle Chief Creek Trib. is a steel stringer/multi-beam or girder carrying N2550 over Eagle Chief Creek Trib. in Alfalfa County, Oklahoma. It was built in 2012, so it is 13 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 6 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 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 54 ft (16.6 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesN2550
CrossesEagle Chief Creek Trib.
Location4.7W & N of Aline
RouteCounty Highway N2550
CountyAlfalfa County
StateOklahoma
Coordinates36.55944, -98.4625
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length54 ft (16.6 m)
Longest span54 ft (16.6 m)
Deck width27 ft (8.2 m)
Roadway width27 ft (8.1 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 closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was N2550 over Eagle Chief Creek Trib. built?

It was built in 2012, making it 13 years old in 2025.

What condition is N2550 over Eagle Chief Creek Trib. 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 August 2024.

How much traffic does N2550 over Eagle Chief Creek Trib. carry?

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

How long is N2550 over Eagle Chief Creek Trib.?

The structure is 54 ft (16.6 m) long with a longest span of 54 ft (16.6 m) and a deck 27 ft wide.

Who owns N2550 over Eagle Chief Creek Trib.?

It is owned by the County Highway Agency.