US Bridges

Rs 170 over Trib. Little Walnut Ck.

Fair

Crawford County, Kansas · 2.2N of Walnut · Structure no. 000000000190170

Built
1924
101 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
110
2013 count
Owner
County
County Highway Agency

About this bridge

Rs 170 over Trib. Little Walnut Ck. is a concrete culvert carrying Rs 170 over Trib. Little Walnut Ck. in Crawford County, Kansas. It was built in 1924, so it is 101 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 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 110 vehicles a day, roughly 10% of them trucks, projected to reach 132 by 2044. The structure is 28 ft (8.5 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRs 170
CrossesTrib. Little Walnut Ck.
Location2.2N of Walnut
RouteCounty Highway 170
CountyCrawford County
StateKansas
Coordinates37.64172, -95.06974
Functional classRural Major Collector

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span8 ft (2.4 m)
Deck width22 ft (6.6 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic110 (2013)
Projected traffic132 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 substandard load-carrying capacity or roadway geometry
Estimated improvement cost$240,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 170 over Trib. Little Walnut Ck. built?

It was built in 1924, making it 101 years old in 2025.

What condition is Rs 170 over Trib. Little Walnut Ck. 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 April 2024.

How much traffic does Rs 170 over Trib. Little Walnut Ck. carry?

About 110 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is Rs 170 over Trib. Little Walnut Ck.?

The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m) and a deck 22 ft wide.

Who owns Rs 170 over Trib. Little Walnut Ck.?

It is owned by the County Highway Agency.