US Bridges

County RD 408 over Bean Br

Fair

Audrain County, Missouri · S 28 T 51 N R 8 W · Structure no. 20340

Built
1990
35 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
150
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 408 over Bean Br is a concrete culvert carrying County RD 408 over Bean Br in Audrain County, Missouri. It was built in 1990, so it is 35 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 5 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 5% of them trucks, projected to reach 188 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty RD 408
CrossesBean Br
LocationS 28 T 51 N R 8 W
RouteCounty Highway 256
CountyAudrain County
StateMissouri
Coordinates39.17593, -91.8038
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic188 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 408 over Bean Br built?

It was built in 1990, making it 35 years old in 2025.

What condition is County RD 408 over Bean Br 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 408 over Bean Br carry?

About 150 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is County RD 408 over Bean Br?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns County RD 408 over Bean Br?

It is owned by the County Highway Agency.