US Bridges

4586C over Panki Bok Creek

Good

McCurtain County, Oklahoma · 4. S; 3.0 E Eagletown · Structure no. 110510000000000

Built
1949
76 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
42 ft
3 main spans
Daily traffic
400
2022 count
Owner
County
County Highway Agency

About this bridge

4586C over Panki Bok Creek is a concrete culvert carrying 4586C over Panki Bok Creek in McCurtain County, Oklahoma. It was built in 1949, so it is 76 years old, older 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.

It carries about 400 vehicles a day, roughly 15% of them trucks, projected to reach 640 by 2042. The structure is 42 ft (12.8 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Carries4586C
CrossesPanki Bok Creek
Location4. S; 3.0 E Eagletown
RouteCounty Highway 4586C
Coordinates33.97551, -94.52369
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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span14 ft (4.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic640 by 2042
Trucks15%
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

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 4586C over Panki Bok Creek built?

It was built in 1949, making it 76 years old in 2025.

What condition is 4586C over Panki Bok 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 July 2023.

How much traffic does 4586C over Panki Bok Creek carry?

About 400 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 4586C over Panki Bok Creek?

The structure is 42 ft (12.8 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.

Who owns 4586C over Panki Bok Creek?

It is owned by the County Highway Agency.