US Bridges

N4710 RD over I-40 under

Fair

Sequoyah County, Oklahoma · 2.2 W JCT US-64B · Structure no. 161240000000000

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
181 ft
4 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

N4710 RD over I-40 under is a concrete continuous slab carrying N4710 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 1,200 vehicles a day, roughly 15% of them trucks, projected to reach 1,920 by 2042. The structure is 181 ft (55.2 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesN4710 RD
CrossesI-40 under
Location2.2 W JCT US-64B
RouteCounty Highway 6834C
CountySequoyah County
StateOklahoma
Coordinates35.39362, -94.63764
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 evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating43 US tons
Inventory rating15 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length181 ft (55.2 m)
Longest span56 ft (17.1 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,920 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 N4710 RD over I-40 under built?

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

What condition is N4710 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 N4710 RD over I-40 under carry?

About 1,200 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N4710 RD over I-40 under?

The structure is 181 ft (55.2 m) long with a longest span of 56 ft (17.1 m) and a deck 29 ft wide.

Who owns N4710 RD over I-40 under?

It is owned by the State Highway Agency.