US Bridges

N4650 RD over I-40 under

Fair

Sequoyah County, Oklahoma · 3.77 E JCT US-59 · Structure no. 160900000000000

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
175 ft
4 main spans
Daily traffic
150
2022 count
Owner
State
State Highway Agency

About this bridge

N4650 RD over I-40 under is a concrete continuous slab carrying N4650 RD over I-40 under in Sequoyah County, Oklahoma. It was built in 1964, so it is 61 years old, older than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 150 vehicles a day, roughly 15% of them trucks, projected to reach 240 by 2042. The structure is 175 ft (53.3 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN4650 RD
CrossesI-40 under
Location3.77 E JCT US-59
RouteCounty Highway E1083
CountySequoyah County
StateOklahoma
Coordinates35.44481, -94.74136
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43 US tons
Inventory rating25.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length175 ft (53.3 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 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
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$1.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was N4650 RD over I-40 under built?

It was built in 1964, making it 61 years old in 2025.

What condition is N4650 RD over I-40 under in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does N4650 RD over I-40 under carry?

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

How long is N4650 RD over I-40 under?

The structure is 175 ft (53.3 m) long with a longest span of 55 ft (16.8 m) and a deck 29 ft wide.

Who owns N4650 RD over I-40 under?

It is owned by the State Highway Agency.