US Bridges

N4520 (4082C) over Red Oak Creek

Good

Le Flore County, Oklahoma · 2.7N of Leflore · Structure no. 297420000000000

Built
2014
11 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
110 ft
2 main spans
Daily traffic
150
2022 count
Owner
County
County Highway Agency

About this bridge

N4520 (4082C) over Red Oak Creek is a steel stringer/multi-beam or girder carrying N4520 (4082C) over Red Oak Creek in Le Flore County, Oklahoma. It was built in 2014, so it is 11 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.

It carries about 150 vehicles a day, roughly 15% of them trucks, projected to reach 240 by 2042. The structure is 110 ft (33.5 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesN4520 (4082C)
CrossesRed Oak Creek
Location2.7N of Leflore
RouteCounty Highway N4520
Coordinates34.93583, -94.98083
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.1 US tons
Inventory rating29 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span55 ft (16.9 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic240 by 2042
Trucks15%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N4520 (4082C) over Red Oak Creek built?

It was built in 2014, making it 11 years old in 2025.

What condition is N4520 (4082C) over Red Oak 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 February 2023.

How much traffic does N4520 (4082C) over Red Oak Creek carry?

About 150 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4520 (4082C) over Red Oak Creek?

The structure is 110 ft (33.5 m) long with a longest span of 55 ft (16.9 m) and a deck 28 ft wide.

Who owns N4520 (4082C) over Red Oak Creek?

It is owned by the County Highway Agency.