US Bridges

N3680 over Creek

Good

Johnston County, Oklahoma · .2S 2.3W of Folsom · Structure no. 324010000000000

Built
2018
7 years old
Condition
Good
inspected May 2023
Type
Culvert
Steel
Length
27 ft
4 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

N3680 over Creek is a steel culvert carrying N3680 over Creek in Johnston County, Oklahoma. It was built in 2018, so it is 7 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesN3680
CrossesCreek
Location.2S 2.3W of Folsom
RouteCounty Highway N3680
Coordinates34.19083, -96.46128
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadH 20
Structure length27 ft (8.2 m)
Longest span6 ft (1.8 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic160 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedNone recorded
Estimated improvement cost$225,000
NavigationNo navigation control on waterway

Frequently asked questions

When was N3680 over Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is N3680 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 May 2023.

How much traffic does N3680 over Creek carry?

About 100 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3680 over Creek?

The structure is 27 ft (8.2 m) long with a longest span of 6 ft (1.8 m) and a deck 24 ft wide.

Who owns N3680 over Creek?

It is owned by the County Highway Agency.