US Bridges

N4290 over Sans Bois Creek

Good

Pittsburg County, Oklahoma · 1. W .6 S Quinton · Structure no. 228550000000000

Built
1991
34 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
163 ft
3 main spans
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

N4290 over Sans Bois Creek is a prestressed concrete stringer/multi-beam or girder carrying N4290 over Sans Bois Creek in Pittsburg County, Oklahoma. It was built in 1991, so it is 34 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 250 vehicles a day, roughly 10% of them trucks, projected to reach 400 by 2042. The structure is 163 ft (49.7 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesN4290
CrossesSans Bois Creek
Location1. W .6 S Quinton
RouteCounty Highway N4290
Coordinates35.11297, -95.38461
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic400 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$640,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4290 over Sans Bois Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is N4290 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 August 2023.

How much traffic does N4290 over Sans Bois Creek carry?

About 250 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4290 over Sans Bois Creek?

The structure is 163 ft (49.7 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns N4290 over Sans Bois Creek?

It is owned by the County Highway Agency.