US Bridges

Rd. U (U-370) over Onion Creek

Good

Lyon County, Kansas · 4.0N 3.0E of Admire · Structure no. 000560959004788

Built
2022
3 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
10
2007 count
Owner
County
County Highway Agency

About this bridge

Rd. U (U-370) over Onion Creek is a steel stringer/multi-beam or girder carrying Rd. U (U-370) over Onion Creek in Lyon County, Kansas. It was built in 2022, so it is 3 years old, younger than the Kansas average of 52.8 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 10 vehicles a day, roughly 10% of them trucks. The structure is 41 ft (12.4 m) long and 24 ft wide. If it were closed, the detour would be 198.8 mi (320 km).

Location

Open in Google Maps
CarriesRd. U (U-370)
CrossesOnion Creek
Location4.0N 3.0E of Admire
RouteCounty Highway 1844
CountyLyon County
StateKansas
Coordinates38.69583, -96.03831
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.2 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length41 ft (12.4 m)
Longest span38 ft (11.7 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic10 (2007)
Projected traffic—
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed198.8 mi (320 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 Rd. U (U-370) over Onion Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Rd. U (U-370) over Onion 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 2023.

How much traffic does Rd. U (U-370) over Onion Creek carry?

About 10 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is Rd. U (U-370) over Onion Creek?

The structure is 41 ft (12.4 m) long with a longest span of 38 ft (11.7 m) and a deck 24 ft wide.

Who owns Rd. U (U-370) over Onion Creek?

It is owned by the County Highway Agency.