US Bridges

N2460 over Cobb Creek

Fair

Caddo County, Oklahoma · .6 N SH 15204 · Structure no. 236140000000000

Built
1994
31 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
3 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

N2460 over Cobb Creek is a prestressed concrete stringer/multi-beam or girder carrying N2460 over Cobb Creek in Caddo County, Oklahoma. It was built in 1994, so it is 31 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 143 ft (43.6 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN2460
CrossesCobb Creek
Location.6 N SH 15204
RouteCounty Highway N2460
Coordinates35.29861, -98.60604
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 rating63.1 US tons
Inventory rating37.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic80 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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$663,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N2460 over Cobb Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is N2460 over Cobb 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 January 2024.

How much traffic does N2460 over Cobb Creek carry?

About 50 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N2460 over Cobb Creek?

The structure is 143 ft (43.6 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns N2460 over Cobb Creek?

It is owned by the County Highway Agency.