US Bridges

N4640 over Whitewater Creek

Fair

Delaware County, Oklahoma · 6NE of Jay · Structure no. 222730000000000

Built
1989
36 years old
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
77 ft
7 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4640 over Whitewater Creek is a concrete culvert carrying N4640 over Whitewater Creek in Delaware County, Oklahoma. It was built in 1989, so it is 36 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 77 ft (23.5 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesN4640
CrossesWhitewater Creek
Location6NE of Jay
RouteCounty Highway N4640
CountyDelaware County
StateOklahoma
Coordinates36.48993, -94.73707
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.9 US tons
Inventory rating37.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length77 ft (23.5 m)
Longest span10 ft (3 m)
Deck width26 ft (7.8 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4640 over Whitewater Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is N4640 over Whitewater Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does N4640 over Whitewater Creek carry?

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

How long is N4640 over Whitewater Creek?

The structure is 77 ft (23.5 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns N4640 over Whitewater Creek?

It is owned by the County Highway Agency.