US Bridges

N3710 over Leader Creek

Good

Coal County, Oklahoma · 3.6N .9E of Tupelo · Structure no. 275160000000000

Built
2009
16 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

N3710 over Leader Creek is a prestressed concrete stringer/multi-beam or girder carrying N3710 over Leader Creek in Coal County, Oklahoma. It was built in 2009, so it is 16 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 80 by 2042. The structure is 77 ft (23.6 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesN3710
CrossesLeader Creek
Location3.6N .9E of Tupelo
RouteCounty Highway N3710
Coordinates34.65639, -96.40667
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating43 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.6 m)
Longest span74 ft (22.6 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 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 closed9.9 mi (16 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$431,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3710 over Leader Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is N3710 over Leader 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 January 2024.

How much traffic does N3710 over Leader Creek carry?

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

How long is N3710 over Leader Creek?

The structure is 77 ft (23.6 m) long with a longest span of 74 ft (22.6 m) and a deck 29 ft wide.

Who owns N3710 over Leader Creek?

It is owned by the County Highway Agency.