US Bridges

N4350 over Sans Bois Creek

GoodPosted for load

Haskell County, Oklahoma · 1.1S 2W of Kinta · Structure no. 292560000000000

Built
2010
15 years old
Condition
Good
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4350 over Sans Bois Creek is a prestressed concrete tee beam carrying N4350 over Sans Bois Creek in Haskell 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2042. The structure is 120 ft (36.7 m) long and 28 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesN4350
CrossesSans Bois Creek
Location1.1S 2W of Kinta
RouteCounty Highway N4350
Coordinates35.10056, -95.27917
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.2 US tons
Inventory rating26.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length120 ft (36.7 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic150 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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$555,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4350 over Sans Bois Creek built?

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

What condition is N4350 over Sans Bois 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 2023.

How much traffic does N4350 over Sans Bois Creek carry?

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

How long is N4350 over Sans Bois Creek?

The structure is 120 ft (36.7 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns N4350 over Sans Bois Creek?

It is owned by the County Highway Agency.