US Bridges

N0470 over Sand Creek

Fair

Cimarron County, Oklahoma · 7S 4E .5S of Keyes · Structure no. 281620000000000

Built
1995
30 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
58 ft
4 main spans
Daily traffic
24
2022 count
Owner
County
County Highway Agency

About this bridge

N0470 over Sand Creek is a steel culvert carrying N0470 over Sand Creek in Cimarron County, Oklahoma. It was built in 1995, so it is 30 years old, younger than the Oklahoma average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 24 vehicles a day, roughly 10% of them trucks, projected to reach 38 by 2042. The structure is 58 ft (17.7 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesN0470
CrossesSand Creek
Location7S 4E .5S of Keyes
RouteCounty Highway N0470
CountyCimarron County
StateOklahoma
Coordinates36.75, -102.30167
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span9 ft (2.7 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
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was N0470 over Sand Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is N0470 over Sand Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does N0470 over Sand Creek carry?

About 24 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is N0470 over Sand Creek?

The structure is 58 ft (17.7 m) long with a longest span of 9 ft (2.7 m).

Who owns N0470 over Sand Creek?

It is owned by the County Highway Agency.