US Bridges

N0390 over Dry Lake River

Good

Cimarron County, Oklahoma · .5 South US56 · Structure no. 269890000000000

Built
2003
22 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
130 ft
1 main span
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N0390 over Dry Lake River is a concrete culvert carrying N0390 over Dry Lake River in Cimarron County, Oklahoma. It was built in 2003, so it is 22 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 24 vehicles a day, roughly 15% of them trucks, projected to reach 38 by 2042. The structure is 130 ft (39.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN0390
CrossesDry Lake River
Location.5 South US56
RouteCounty Highway N0390
Coordinates36.77739, -102.31979
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.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span130 ft (39.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2022)
Projected traffic38 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 N0390 over Dry Lake River built?

It was built in 2003, making it 22 years old in 2025.

What condition is N0390 over Dry Lake River 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 October 2023.

How much traffic does N0390 over Dry Lake River carry?

About 24 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is N0390 over Dry Lake River?

The structure is 130 ft (39.6 m) long with a longest span of 130 ft (39.6 m).

Who owns N0390 over Dry Lake River?

It is owned by the County Highway Agency.