US Bridges

IRR N2470 over Blue Beaver Creek

Fair

Comanche County, Oklahoma · .7 S 9.3 W of I-44 · Structure no. 256560000000000

Built
2001
24 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
119 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N2470 over Blue Beaver Creek is a prestressed concrete tee beam carrying IRR N2470 over Blue Beaver Creek in Comanche County, Oklahoma. It was built in 2001, so it is 24 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 10% of them trucks, projected to reach 160 by 2042. The structure is 119 ft (36.3 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIRR N2470
CrossesBlue Beaver Creek
Location.7 S 9.3 W of I-44
RouteCounty Highway N2470
CountyComanche County
StateOklahoma
Coordinates34.49694, -98.57472
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 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 rating70 US tons
Inventory rating42 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length119 ft (36.3 m)
Longest span40 ft (12.1 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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$557,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR N2470 over Blue Beaver Creek built?

It was built in 2001, making it 24 years old in 2025.

What condition is IRR N2470 over Blue Beaver 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 August 2023.

How much traffic does IRR N2470 over Blue Beaver Creek carry?

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

How long is IRR N2470 over Blue Beaver Creek?

The structure is 119 ft (36.3 m) long with a longest span of 40 ft (12.1 m) and a deck 29 ft wide.

Who owns IRR N2470 over Blue Beaver Creek?

It is owned by the County Highway Agency.