6138C over Chun Creek

Good

Pittsburg County, Oklahoma · .1 E of Pittsburg · Structure no. 071830000000000

Built: 1939; 86 years old
Condition: Good; inspected August 2023
Type: Slab; Concrete
Length: 45 ft; 2 main spans
Daily traffic: 250; 2022 count
Owner: County; County Highway Agency

About this bridge

6138C over Chun Creek is a concrete slab carrying 6138C over Chun Creek in Pittsburg County, Oklahoma. It was built in 1939, so it is 86 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 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 250 vehicles a day, roughly 15% of them trucks, projected to reach 400 by 2042. The structure is 45 ft (13.7 m) long and 23 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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Carries6138C

CrossesChun Creek

Location.1 E of Pittsburg

RouteCounty Highway 6138C

CountyPittsburg County

StateOklahoma

Coordinates34.70961, -95.84332

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	5 Fair	All primary structural elements are sound but may have minor section loss, cracking, spalling or scour.

Last inspectionAugust 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 geometry4: Meets minimum tolerable limits to be 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 typeSlab

MaterialConcrete

DeckConcrete, cast-in-place

Main spans2

Design loadHS 20

Structure length45 ft (13.7 m)

Longest span21 ft (6.4 m)

Deck width23 ft (6.9 m)

Roadway width20 ft (6.2 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)

Projected traffic400 by 2042

Trucks15%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed11.8 mi (19 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$331,000

NavigationNo navigation control on waterway

Frequently asked questions

When was 6138C over Chun Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is 6138C over Chun 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 6138C over Chun Creek carry?

About 250 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is 6138C over Chun Creek?

The structure is 45 ft (13.7 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns 6138C over Chun Creek?

It is owned by the County Highway Agency.