US Bridges

N3710 (0730C) over Little Blue Creek

Good

Bryan County, Oklahoma · 1S of Cobb · Structure no. 314860000000000

Built
2018
7 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N3710 (0730C) over Little Blue Creek is a prestressed concrete stringer/multi-beam or girder carrying N3710 (0730C) over Little Blue Creek in Bryan County, Oklahoma. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 15% of them trucks, projected to reach 160 by 2042. The structure is 108 ft (32.9 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesN3710 (0730C)
CrossesLittle Blue Creek
Location1S of Cobb
RouteCounty Highway 730C
Coordinates34.06839, -96.40774
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating102 US tons
Inventory rating61 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length108 ft (32.9 m)
Longest span106 ft (32.3 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 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 closed6.2 mi (10 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 N3710 (0730C) over Little Blue Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is N3710 (0730C) over Little Blue 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 May 2024.

How much traffic does N3710 (0730C) over Little Blue Creek carry?

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

How long is N3710 (0730C) over Little Blue Creek?

The structure is 108 ft (32.9 m) long with a longest span of 106 ft (32.3 m) and a deck 34 ft wide.

Who owns N3710 (0730C) over Little Blue Creek?

It is owned by the County Highway Agency.