US Bridges

IRR N2490 over Cobb Creek

Good

Caddo County, Oklahoma · 4.9S of Eakley · Structure no. 295820000000000

Built
2010
15 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
105 ft
1 main span
Daily traffic
182
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N2490 over Cobb Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR N2490 over Cobb Creek in Caddo County, Oklahoma. It was built in 2010, so it is 15 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 182 vehicles a day, roughly 15% of them trucks, projected to reach 220 by 2042. The structure is 105 ft (32 m) long and 29 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesIRR N2490
CrossesCobb Creek
Location4.9S of Eakley
RouteCounty Highway N2490
Coordinates35.23444, -98.55306
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating40.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length105 ft (32 m)
Longest span103 ft (31.4 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic182 (2022)
Projected traffic220 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$620,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N2490 over Cobb Creek built?

It was built in 2010, making it 15 years old in 2025.

What condition is IRR N2490 over Cobb 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 February 2024.

How much traffic does IRR N2490 over Cobb Creek carry?

About 182 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is IRR N2490 over Cobb Creek?

The structure is 105 ft (32 m) long with a longest span of 103 ft (31.4 m) and a deck 29 ft wide.

Who owns IRR N2490 over Cobb Creek?

It is owned by the County Highway Agency.