US Bridges

311th ST over South Wea Creek

Fair

Miami County, Kansas · 3.5S 0.7E of Louisburg · Structure no. 000611107704980

Built
1982
43 years old
Condition
Fair
inspected June 2023
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
370
2011 count
Owner
County
County Highway Agency

About this bridge

311th ST over South Wea Creek is a concrete continuous slab carrying 311th ST over South Wea Creek in Miami County, Kansas. It was built in 1982, so it is 43 years old, younger 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 370 vehicles a day, projected to reach 346 by 2043. The structure is 93 ft (28.3 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries311th ST
CrossesSouth Wea Creek
Location3.5S 0.7E of Louisburg
RouteCounty Highway 0
CountyMiami County
StateKansas
Coordinates38.56274, -94.66289
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length93 ft (28.3 m)
Longest span36 ft (11 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic370 (2011)
Projected traffic346 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 311th ST over South Wea Creek built?

It was built in 1982, making it 43 years old in 2025.

What condition is 311th ST over South Wea Creek 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 June 2023.

How much traffic does 311th ST over South Wea Creek carry?

About 370 vehicles per day (2011 count).

How long is 311th ST over South Wea Creek?

The structure is 93 ft (28.3 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns 311th ST over South Wea Creek?

It is owned by the County Highway Agency.