US Bridges

N2990 over Cottonwood Creek

Fair

Grant County, Oklahoma · .3N 3.2E 3.5S of Medford · Structure no. 023720000000000

Built
1930
95 years old, rebuilt 2006
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N2990 over Cottonwood Creek is a steel stringer/multi-beam or girder carrying N2990 over Cottonwood Creek in Grant County, Oklahoma. It was built in 1930 and reconstructed in 2006, so it is 95 years old, older 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 24 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 27 ft (8.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN2990
CrossesCottonwood Creek
Location.3N 3.2E 3.5S of Medford
RouteCounty Highway N2990
CountyGrant County
StateOklahoma
Coordinates36.75807, -97.67817
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length27 ft (8.1 m)
Longest span26 ft (7.9 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2990 over Cottonwood Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 2006.

What condition is N2990 over Cottonwood Creek 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 N2990 over Cottonwood Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2990 over Cottonwood Creek?

The structure is 27 ft (8.1 m) long with a longest span of 26 ft (7.9 m) and a deck 28 ft wide.

Who owns N2990 over Cottonwood Creek?

It is owned by the County Highway Agency.