US Bridges

N3340 (1078C) over Creek

Fair

Carter County, Oklahoma · 5E .7N of JCT US70 & US77 · Structure no. 147890000000000

Built
1960
65 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
47 ft
3 main spans
Daily traffic
391
2022 count
Owner
County
County Highway Agency

About this bridge

N3340 (1078C) over Creek is a concrete culvert carrying N3340 (1078C) over Creek in Carter 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 391 vehicles a day, roughly 15% of them trucks, projected to reach 626 by 2042. The structure is 47 ft (14.3 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesN3340 (1078C)
CrossesCreek
Location5E .7N of JCT US70 & US77
RouteCounty Highway N3340
CountyCarter County
StateOklahoma
Coordinates34.14784, -97.05568
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span13 ft (4 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic391 (2022)
Projected traffic626 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 N3340 (1078C) over Creek built?

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

What condition is N3340 (1078C) over 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 March 2023.

How much traffic does N3340 (1078C) over Creek carry?

About 391 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N3340 (1078C) over Creek?

The structure is 47 ft (14.3 m) long with a longest span of 13 ft (4 m) and a deck 31 ft wide.

Who owns N3340 (1078C) over Creek?

It is owned by the County Highway Agency.