US Bridges

County RD 403 over Youngs CR

Fair

Callaway County, Missouri · S 4 T 46 N R 9 W · Structure no. 21207

Built
1975
50 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
90
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 403 over Youngs CR is a concrete culvert carrying County RD 403 over Youngs CR in Callaway County, Missouri. It was built in 1975, so it is 50 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 90 vehicles a day, roughly 10% of them trucks, projected to reach 135 by 2043. The structure is 33 ft (10.1 m) long and 38 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty RD 403
CrossesYoungs CR
LocationS 4 T 46 N R 9 W
RouteCounty Highway 295
CountyCallaway County
StateMissouri
Coordinates38.78269, -91.94406
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2023)
Projected traffic135 by 2043
Trucks10%
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 County RD 403 over Youngs CR built?

It was built in 1975, making it 50 years old in 2025.

What condition is County RD 403 over 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 October 2024.

How much traffic does County RD 403 over Youngs CR carry?

About 90 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 403 over Youngs CR?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 38 ft wide.

Who owns County RD 403 over Youngs CR?

It is owned by the County Highway Agency.