US Bridges

Rs 340 Bsn 350 over Trib. to White Rock Ck.

Fair

Jewell County, Kansas · 2.4N of Mankato · Structure no. 000000000450350

Built
1969
56 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
36 ft
2 main spans
Daily traffic
148
2018 count
Owner
County
County Highway Agency

About this bridge

Rs 340 Bsn 350 over Trib. to White Rock Ck. is a concrete culvert carrying Rs 340 Bsn 350 over Trib. to White Rock Ck. in Jewell County, Kansas. It was built in 1969, so it is 56 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 148 vehicles a day, roughly 15% of them trucks, projected to reach 170 by 2044. The structure is 36 ft (11 m) long and 61 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesRs 340 Bsn 350
CrossesTrib. to White Rock Ck.
Location2.4N of Mankato
RouteCounty Highway 340
CountyJewell County
StateKansas
Coordinates39.83648, -98.21278
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 inspectionMarch 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating18 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length36 ft (11 m)
Longest span17 ft (5.1 m)
Deck width61 ft (18.6 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic148 (2018)
Projected traffic170 by 2044
Trucks15%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$250,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Rs 340 Bsn 350 over Trib. to White Rock Ck. built?

It was built in 1969, making it 56 years old in 2025.

What condition is Rs 340 Bsn 350 over Trib. to White Rock 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 March 2024.

How much traffic does Rs 340 Bsn 350 over Trib. to White Rock Ck. carry?

About 148 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is Rs 340 Bsn 350 over Trib. to White Rock Ck.?

The structure is 36 ft (11 m) long with a longest span of 17 ft (5.1 m) and a deck 61 ft wide.

Who owns Rs 340 Bsn 350 over Trib. to White Rock Ck.?

It is owned by the County Highway Agency.