US Bridges

US59 K52 HWY over Sf Little Osage River

Good

Allen County, Kansas · 4.99 MI N US54 · Structure no. 999905900010201

Built
1962
63 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
94 ft
3 main spans
Daily traffic
1,642
2023 count
Owner
State
State Highway Agency

About this bridge

US59 K52 HWY over Sf Little Osage River is a concrete continuous slab carrying US59 K52 HWY over Sf Little Osage River in Allen 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 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 1,642 vehicles a day, roughly 24% of them trucks, projected to reach 1,778 by 2044. The structure is 94 ft (28.5 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS59 K52 HWY
CrossesSf Little Osage River
Location4.99 MI N US54
RouteU.S. Route 59
StateKansas
Coordinates37.99361, -95.17028
Functional classRural Minor Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length94 ft (28.5 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,642 (2023)
Projected traffic1,778 by 2044
Trucks24%
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

OwnerState Highway Agency
Maintained byState 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 US59 K52 HWY over Sf Little Osage River built?

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

What condition is US59 K52 HWY over Sf Little Osage 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 February 2023.

How much traffic does US59 K52 HWY over Sf Little Osage River carry?

About 1,642 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is US59 K52 HWY over Sf Little Osage River?

The structure is 94 ft (28.5 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns US59 K52 HWY over Sf Little Osage River?

It is owned by the State Highway Agency.