US Bridges

Local 11.6-C.0 over Trib. Little Osage River

PoorPosted for load

Bourbon County, Kansas · 0.6E of Mapleton · Structure no. 000061087605740

Built
1925
100 years old
Condition
Poor
inspected January 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
70
2006 count
Owner
County
County Highway Agency

About this bridge

Local 11.6-C.0 over Trib. Little Osage River is a concrete culvert carrying Local 11.6-C.0 over Trib. Little Osage River in Bourbon County, Kansas. It was built in 1925, so it is 100 years old, older than the Kansas average of 52.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 70 vehicles a day, projected to reach 70 by 2044. The structure is 21 ft (6.4 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLocal 11.6-C.0
CrossesTrib. Little Osage River
Location0.6E of Mapleton
RouteCounty Highway 0
CountyBourbon County
StateKansas
Coordinates38.00822, -94.86667
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJanuary 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating21.8 US tons
Inventory rating12 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width22 ft (6.7 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic70 (2006)
Projected traffic70 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of relocation of road
Estimated improvement cost$49,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Local 11.6-C.0 over Trib. Little Osage River built?

It was built in 1925, making it 100 years old in 2025.

What condition is Local 11.6-C.0 over Trib. Little Osage River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.

How much traffic does Local 11.6-C.0 over Trib. Little Osage River carry?

About 70 vehicles per day (2006 count).

How long is Local 11.6-C.0 over Trib. Little Osage River?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 22 ft wide.

Who owns Local 11.6-C.0 over Trib. Little Osage River?

It is owned by the County Highway Agency.