US Bridges

N3946 over Sand Creek

Good

Washington County, Oklahoma · 1S Bartlesville · Structure no. 273580000000000

Built
2006
19 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
302 ft
3 main spans
Daily traffic
765
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

N3946 over Sand Creek is a prestressed concrete stringer/multi-beam or girder carrying N3946 over Sand Creek in Washington County, Oklahoma. It was built in 2006, so it is 19 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 765 vehicles a day, roughly 5% of them trucks, projected to reach 1,224 by 2042. The structure is 302 ft (92.2 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesN3946
CrossesSand Creek
Location1S Bartlesville
RouteCounty Highway N3946
Coordinates36.71654, -95.97844
Functional classUrban Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
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 rating77.5 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length302 ft (92.2 m)
Longest span100 ft (30.5 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic765 (2022)
Projected traffic1,224 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$2.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N3946 over Sand Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is N3946 over Sand 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 2023.

How much traffic does N3946 over Sand Creek carry?

About 765 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is N3946 over Sand Creek?

The structure is 302 ft (92.2 m) long with a longest span of 100 ft (30.5 m) and a deck 34 ft wide.

Who owns N3946 over Sand Creek?

It is owned by the City or Municipal Highway Agency.