US Bridges

RS429 Smoky Valley over Smoky Hill River Trib.

Fair

McPherson County, Kansas · 1.0S 0.5E of Lindsborg · Structure no. 9999081B0590811

Built
1962
63 years old
Condition
Fair
inspected May 2023
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
1,110
2020 count
Owner
County
County Highway Agency

About this bridge

RS429 Smoky Valley over Smoky Hill River Trib. is a concrete culvert carrying RS429 Smoky Valley over Smoky Hill River Trib. in McPherson County, Kansas. It was built in 1962, so it is 63 years old, older than the Kansas average of 52.8 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 1,110 vehicles a day, roughly 12% of them trucks, projected to reach 1,650 by 2040. The structure is 36 ft (10.9 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesRS429 Smoky Valley
CrossesSmoky Hill River Trib.
Location1.0S 0.5E of Lindsborg
RouteCounty Highway 429
CountyMcPherson County
StateKansas
Coordinates38.55097, -97.65766
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span11 ft (3.5 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic1,110 (2020)
Projected traffic1,650 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 RS429 Smoky Valley over Smoky Hill River Trib. built?

It was built in 1962, making it 63 years old in 2025.

What condition is RS429 Smoky Valley over Smoky Hill River Trib. 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 May 2023.

How much traffic does RS429 Smoky Valley over Smoky Hill River Trib. carry?

About 1,110 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is RS429 Smoky Valley over Smoky Hill River Trib.?

The structure is 36 ft (10.9 m) long with a longest span of 11 ft (3.5 m) and a deck 34 ft wide.

Who owns RS429 Smoky Valley over Smoky Hill River Trib.?

It is owned by the County Highway Agency.