US Bridges

N4630 over Little Sallisaw Creek

FairPosted for load

Sequoyah County, Oklahoma · 1.5E 1.3S JCT US59/US64 · Structure no. 274670000000000

Built
1992
33 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
65 ft
4 main spans
Daily traffic
220
2022 count
Owner
County
County Highway Agency

About this bridge

N4630 over Little Sallisaw Creek is a concrete culvert carrying N4630 over Little Sallisaw Creek in Sequoyah County, Oklahoma. It was built in 1992, so it is 33 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 220 vehicles a day, roughly 10% of them trucks, projected to reach 352 by 2042. The structure is 65 ft (19.9 m) long and 45 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesN4630
CrossesLittle Sallisaw Creek
Location1.5E 1.3S JCT US59/US64
RouteCounty Highway N4630
CountySequoyah County
StateOklahoma
Coordinates35.43013, -94.77905
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length65 ft (19.9 m)
Longest span17 ft (5.2 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2022)
Projected traffic352 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N4630 over Little Sallisaw Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is N4630 over Little Sallisaw Creek 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 June 2023.

How much traffic does N4630 over Little Sallisaw Creek carry?

About 220 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N4630 over Little Sallisaw Creek?

The structure is 65 ft (19.9 m) long with a longest span of 17 ft (5.2 m) and a deck 45 ft wide.

Who owns N4630 over Little Sallisaw Creek?

It is owned by the County Highway Agency.