US Bridges

12th. Ave. over Smoky Hill River

Good

McPherson County, Kansas · 1.5W 2.8S of Lindsborg · Structure no. 000590781005023

Built
1979
46 years old
Condition
Good
inspected December 2024
Type
Tee Beam
Prestressed Concrete Continuous
Length
243 ft
3 main spans
Daily traffic
50
2020 count
Owner
County
County Highway Agency

About this bridge

12th. Ave. over Smoky Hill River is a prestressed concrete continuous tee beam carrying 12th. Ave. over Smoky Hill River in McPherson County, Kansas. It was built in 1979, so it is 46 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 50 vehicles a day, roughly 6% of them trucks, projected to reach 75 by 2040. The structure is 243 ft (74.1 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
Carries12th. Ave.
CrossesSmoky Hill River
Location1.5W 2.8S of Lindsborg
RouteCounty Highway 5905
CountyMcPherson County
StateKansas
Coordinates38.53146, -97.70311
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.4 US tons
Inventory rating21.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length243 ft (74.1 m)
Longest span81 ft (24.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic50 (2020)
Projected traffic75 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 12th. Ave. over Smoky Hill River built?

It was built in 1979, making it 46 years old in 2025.

What condition is 12th. Ave. over Smoky Hill 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 December 2024.

How much traffic does 12th. Ave. over Smoky Hill River carry?

About 50 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is 12th. Ave. over Smoky Hill River?

The structure is 243 ft (74.1 m) long with a longest span of 81 ft (24.6 m) and a deck 28 ft wide.

Who owns 12th. Ave. over Smoky Hill River?

It is owned by the County Highway Agency.