N3340 (1078C) over Creek

Good

Carter County, Oklahoma · 3E JCT US70/SH77 · Structure no. 270280000000000

Built: 2002; 23 years old
Condition: Good; inspected March 2023
Type: Culvert; Concrete
Length: 21 ft; 2 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 2002, so it is 23 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 391 vehicles a day, roughly 15% of them trucks, projected to reach 626 by 2042. The structure is 21 ft (6.4 m) long and 45 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesN3340 (1078C)

CrossesCreek

Location3E JCT US70/SH77

RouteCounty Highway N3340

CountyCarter County

StateOklahoma

Coordinates34.13469, -97.05567

Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	7 Good	Some minor problems.

Last inspectionMarch 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; action required to protect exposed foundations

Structural evaluation6: Equal to present minimum criteria

Deck geometry9: Superior to present desirable criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating41.4 US tons

Inventory rating24.8 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans2

Design loadHS 20

Structure length21 ft (6.4 m)

Longest span10 ft (3 m)

Deck width45 ft (13.7 m)

Roadway width43 ft (13 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 closed1.9 mi (3 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 2002, making it 23 years old in 2025.

What condition is N3340 (1078C) over Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 45 ft wide.

Who owns N3340 (1078C) over Creek?

It is owned by the County Highway Agency.