US Bridges

N4468 over Mill Creek

GoodPosted for load

Cherokee County, Oklahoma · .8S .2E of Zeb · Structure no. 280580000000000

Built
2004
21 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
61
2022 count
Owner
County
County Highway Agency

About this bridge

N4468 over Mill Creek is a concrete culvert carrying N4468 over Mill Creek in Cherokee County, Oklahoma. It was built in 2004, so it is 21 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 61 vehicles a day, roughly 10% of them trucks, projected to reach 98 by 2042. The structure is 40 ft (12.2 m) long and 26 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesN4468
CrossesMill Creek
Location.8S .2E of Zeb
RouteCounty Highway N4468
Coordinates35.80914, -95.05876
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span12 ft (3.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2022)
Projected traffic98 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N4468 over Mill Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is N4468 over Mill 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 N4468 over Mill Creek carry?

About 61 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4468 over Mill Creek?

The structure is 40 ft (12.2 m) long with a longest span of 12 ft (3.7 m) and a deck 26 ft wide.

Who owns N4468 over Mill Creek?

It is owned by the County Highway Agency.