US Bridges

County RD 368 over Trib Youngs CR

Fair

Audrain County, Missouri · S 7 T 52 N R 9 W · Structure no. 36173

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
49 ft
2 main spans
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 368 over Trib Youngs CR is a concrete culvert carrying County RD 368 over Trib Youngs CR in Audrain County, Missouri. It was built in 1960, so it is 65 years old, older than the Missouri average of 45.1 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 13 by 2043. The structure is 49 ft (14.8 m) long and 27 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesCounty RD 368
CrossesTrib Youngs CR
LocationS 7 T 52 N R 9 W
RouteCounty Highway 368
CountyAudrain County
StateMissouri
Coordinates39.30194, -91.96694
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length49 ft (14.8 m)
Longest span22 ft (6.6 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic13 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 368 over Trib Youngs CR built?

It was built in 1960, making it 65 years old in 2025.

What condition is County RD 368 over Trib Youngs CR 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 2023.

How much traffic does County RD 368 over Trib Youngs CR carry?

About 10 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 368 over Trib Youngs CR?

The structure is 49 ft (14.8 m) long with a longest span of 22 ft (6.6 m) and a deck 27 ft wide.

Who owns County RD 368 over Trib Youngs CR?

It is owned by the County Highway Agency.