US Bridges

N4550 over Cedar Creek

Good

Le Flore County, Oklahoma · 3.1 E; 2.6 N Leflore · Structure no. 091970000000000

Built
1940
85 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
67 ft
4 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N4550 over Cedar Creek is a concrete slab carrying N4550 over Cedar Creek in Le Flore County, Oklahoma. It was built in 1940, so it is 85 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 67 ft (20.4 m) long and 22 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN4550
CrossesCedar Creek
Location3.1 E; 2.6 N Leflore
RouteCounty Highway N4550
Coordinates34.93771, -94.92927
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length67 ft (20.4 m)
Longest span14 ft (4.3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 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 closed3.7 mi (6 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$410,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4550 over Cedar Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is N4550 over Cedar 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 January 2023.

How much traffic does N4550 over Cedar Creek carry?

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

How long is N4550 over Cedar Creek?

The structure is 67 ft (20.4 m) long with a longest span of 14 ft (4.3 m) and a deck 22 ft wide.

Who owns N4550 over Cedar Creek?

It is owned by the County Highway Agency.