US Bridges

N4470 (fas 3118) over Little San Bois Creek

GoodPosted for load

Haskell County, Oklahoma · 2.4N of S.H. 9 · Structure no. 304910000000000

Built
2012
13 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4470 (fas 3118) over Little San Bois Creek is a concrete culvert carrying N4470 (fas 3118) over Little San Bois Creek in Haskell County, Oklahoma. It was built in 2012, so it is 13 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 15% of them trucks, projected to reach 160 by 2042. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesN4470 (fas 3118)
CrossesLittle San Bois Creek
Location2.4N of S.H. 9
RouteCounty Highway N4470
Coordinates35.295, -95.06194
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.8 US tons
Inventory rating33.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length39 ft (11.9 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 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 closed5 mi (8 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4470 (fas 3118) over Little San Bois Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is N4470 (fas 3118) over Little San 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 2024.

How much traffic does N4470 (fas 3118) over Little San Bois Creek carry?

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

How long is N4470 (fas 3118) over Little San Bois Creek?

The structure is 39 ft (11.9 m) long with a longest span of 11 ft (3.4 m).

Who owns N4470 (fas 3118) over Little San Bois Creek?

It is owned by the County Highway Agency.