US Bridges

K31 HWY over N F Little Osage River

Fair

Anderson County, Kansas · 0.57 MI E Ejct US59 · Structure no. 999903100020221

Built
1928
97 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
1,108
2023 count
Owner
State
State Highway Agency

About this bridge

K31 HWY over N F Little Osage River is a concrete culvert carrying K31 HWY over N F Little Osage River in Anderson County, Kansas. It was built in 1928, so it is 97 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 5 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 1,108 vehicles a day, roughly 8% of them trucks, projected to reach 1,130 by 2044. The structure is 26 ft (7.8 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesK31 HWY
CrossesN F Little Osage River
Location0.57 MI E Ejct US59
RouteState Highway 31
CountyAnderson County
StateKansas
Coordinates38.08139, -95.15889
Functional classRural Minor Arterial

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating40.3 US tons
Inventory rating24 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length26 ft (7.8 m)
Longest span8 ft (2.4 m)
Deck width30 ft (9 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,108 (2023)
Projected traffic1,130 by 2044
Trucks8%
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 K31 HWY over N F Little Osage River built?

It was built in 1928, making it 97 years old in 2025.

What condition is K31 HWY over N F Little Osage River 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 February 2024.

How much traffic does K31 HWY over N F Little Osage River carry?

About 1,108 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is K31 HWY over N F Little Osage River?

The structure is 26 ft (7.8 m) long with a longest span of 8 ft (2.4 m) and a deck 30 ft wide.

Who owns K31 HWY over N F Little Osage River?

It is owned by the State Highway Agency.