US Bridges

4618C over Nellie Creek

GoodPosted for load

McIntosh County, Oklahoma · 1E of Onapa · Structure no. 200940000000000

Built
1982
43 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

4618C over Nellie Creek is a concrete culvert carrying 4618C over Nellie Creek in McIntosh County, Oklahoma. It was built in 1982, so it is 43 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 8 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 32 ft (9.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Carries4618C
CrossesNellie Creek
Location1E of Onapa
RouteCounty Highway 4618C
Coordinates35.40612, -95.53576
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.7 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span10 ft (3 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 closed1.9 mi (3 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 4618C over Nellie Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is 4618C over Nellie 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 2024.

How much traffic does 4618C over Nellie Creek carry?

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

How long is 4618C over Nellie Creek?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m).

Who owns 4618C over Nellie Creek?

It is owned by the County Highway Agency.