US Bridges

N3670 Creek over Creek

Good

Seminole County, Oklahoma · 1 Mile W of Cromwell · Structure no. 329280000000000

Built
2017
8 years old
Condition
Good
inspected August 2023
Type
Culvert
Steel
Length
31 ft
3 main spans
Daily traffic
70
2022 count
Owner
County
County Highway Agency

About this bridge

N3670 Creek over Creek is a steel culvert carrying N3670 Creek over Creek in Seminole County, Oklahoma. It was built in 2017, so it is 8 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 70 vehicles a day, roughly 10% of them trucks, projected to reach 112 by 2042. The structure is 31 ft (9.6 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN3670 Creek
CrossesCreek
Location1 Mile W of Cromwell
RouteCounty Highway N3670
Coordinates35.37089, -96.47664
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 protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal 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 alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span9 ft (2.6 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2022)
Projected traffic112 by 2042
Trucks10%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N3670 Creek over Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is N3670 Creek 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 August 2023.

How much traffic does N3670 Creek over Creek carry?

About 70 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N3670 Creek over Creek?

The structure is 31 ft (9.6 m) long with a longest span of 9 ft (2.6 m) and a deck 26 ft wide.

Who owns N3670 Creek over Creek?

It is owned by the County Highway Agency.