US Bridges

County RD 409 over Clear CR

Fair

Marion County, Missouri · S 11 T 57 N R 5 W · Structure no. 20237

Built
1988
37 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
47 ft
3 main spans
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 409 over Clear CR is a concrete continuous culvert carrying County RD 409 over Clear CR in Marion County, Missouri. It was built in 1988, so it is 37 years old, younger 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 188 by 2043. The structure is 47 ft (14.3 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 409
CrossesClear CR
LocationS 11 T 57 N R 5 W
RouteCounty Highway 252
CountyMarion County
StateMissouri
Coordinates39.75192, -91.4245
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span15 ft (4.6 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic188 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 409 over Clear CR built?

It was built in 1988, making it 37 years old in 2025.

What condition is County RD 409 over Clear 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 March 2023.

How much traffic does County RD 409 over Clear CR carry?

About 150 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 409 over Clear CR?

The structure is 47 ft (14.3 m) long with a longest span of 15 ft (4.6 m) and a deck 32 ft wide.

Who owns County RD 409 over Clear CR?

It is owned by the County Highway Agency.