US Bridges

343rd St. over Walnut Creek

Good

Miami County, Kansas · 8.0S 4.4W of Louisburg · Structure no. 000611097505060

Built
1998
27 years old
Condition
Good
inspected June 2023
Type
Slab
Wood or Timber
Length
40 ft
1 main span
Daily traffic
171
2011 count
Owner
County
County Highway Agency

About this bridge

343rd St. over Walnut Creek is a wood or timber slab carrying 343rd St. over Walnut Creek in Miami County, Kansas. It was built in 1998, so it is 27 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 171 vehicles a day, roughly 1% of them trucks, projected to reach 195 by 2043. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries343rd St.
CrossesWalnut Creek
Location8.0S 4.4W of Louisburg
RouteCounty Highway 6110
CountyMiami County
StateKansas
Coordinates38.50595, -94.7597
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
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; 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 rating30 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width30 ft (9.2 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic171 (2011)
Projected traffic195 by 2043
Trucks1%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost$46,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 343rd St. over Walnut Creek built?

It was built in 1998, making it 27 years old in 2025.

What condition is 343rd St. over Walnut Creek 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 June 2023.

How much traffic does 343rd St. over Walnut Creek carry?

About 171 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is 343rd St. over Walnut Creek?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 30 ft wide.

Who owns 343rd St. over Walnut Creek?

It is owned by the County Highway Agency.