US Bridges

NS 233 Co. Rd. over I-40 under

Fair

Custer County, Oklahoma · 4.3 MI E JCT I-40 Bus · Structure no. 151430000000000

Built
1960
65 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
175 ft
4 main spans
Daily traffic
101
2022 count
Owner
State
State Highway Agency

About this bridge

NS 233 Co. Rd. over I-40 under is a concrete continuous slab carrying NS 233 Co. Rd. over I-40 under in Custer County, Oklahoma. It was built in 1960, so it is 65 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 101 vehicles a day, roughly 35% of them trucks, projected to reach 162 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
CarriesNS 233 Co. Rd.
CrossesI-40 under
Location4.3 MI E JCT I-40 Bus
RouteCounty Highway N2330
CountyCuster County
StateOklahoma
Coordinates35.52, -98.83472
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length175 ft (53.3 m)
Longest span55 ft (16.8 m)
Deck width29 ft (8.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101 (2022)
Projected traffic162 by 2042
Trucks35%
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 NS 233 Co. Rd. over I-40 under built?

It was built in 1960, making it 65 years old in 2025.

What condition is NS 233 Co. 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 September 2024.

How much traffic does NS 233 Co. Rd. over I-40 under carry?

About 101 vehicles per day (2022 count), of which roughly 35% are trucks.

How long is NS 233 Co. 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 NS 233 Co. Rd. over I-40 under?

It is owned by the State Highway Agency.