US Bridges

Co. Rd. N3300 over I-40 under

FairPosted for load

Pottawatomie County, Oklahoma · 1 MI E Ok C/L · Structure no. 151400000000000

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
172 ft
4 main spans
Daily traffic
400
2022 count
Owner
State
State Highway Agency

About this bridge

Co. Rd. N3300 over I-40 under is a concrete continuous slab carrying Co. Rd. N3300 over I-40 under in Pottawatomie 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. Its operating status is: posted for load restriction.

It carries about 400 vehicles a day, roughly 10% of them trucks, projected to reach 640 by 2042. The structure is 172 ft (52.4 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCo. Rd. N3300
CrossesI-40 under
Location1 MI E Ok C/L
RouteCounty Highway N3300
CountyPottawatomie County
StateOklahoma
Coordinates35.38389, -97.12482
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 rating28.7 US tons
Inventory rating17.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length172 ft (52.4 m)
Longest span55 ft (16.8 m)
Deck width25 ft (7.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2022)
Projected traffic640 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 Co. Rd. N3300 over I-40 under built?

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

What condition is Co. Rd. N3300 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 April 2023.

How much traffic does Co. Rd. N3300 over I-40 under carry?

About 400 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Co. Rd. N3300 over I-40 under?

The structure is 172 ft (52.4 m) long with a longest span of 55 ft (16.8 m) and a deck 25 ft wide.

Who owns Co. Rd. N3300 over I-40 under?

It is owned by the State Highway Agency.