US Bridges

IRR N3430 over Creek

Good

Lincoln County, Oklahoma · 3.9 E & .2 S Tryon · Structure no. 326190000000000

Built
2020
5 years old
Condition
Good
inspected February 2024
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

IRR N3430 over Creek is a steel culvert carrying IRR N3430 over Creek in Lincoln County, Oklahoma. It was built in 2020, so it is 5 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2042. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIRR N3430
CrossesCreek
Location3.9 E & .2 S Tryon
RouteCounty Highway N3430
Coordinates35.86638, -96.89434
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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating89 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span9 ft (2.7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 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 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 IRR N3430 over Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is IRR N3430 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 February 2024.

How much traffic does IRR N3430 over Creek carry?

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

How long is IRR N3430 over Creek?

The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m) and a deck 20 ft wide.

Who owns IRR N3430 over Creek?

It is owned by the County Highway Agency.