US Bridges

County RD 449 over Trib of Littleby C

Fair

Audrain County, Missouri · S 26 T 52 N R 8 W · Structure no. 22567

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
44 ft
2 main spans
Daily traffic
35
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 449 over Trib of Littleby C is a concrete culvert carrying County RD 449 over Trib of Littleby C in Audrain County, Missouri. It was built in 1980, so it is 45 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2043. The structure is 44 ft (13.4 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 449
CrossesTrib of Littleby C
LocationS 26 T 52 N R 8 W
RouteCounty Highway 362
CountyAudrain County
StateMissouri
Coordinates39.25908, -91.76111
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 within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length44 ft (13.4 m)
Longest span14 ft (4.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2023)
Projected traffic44 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 449 over Trib of Littleby C built?

It was built in 1980, making it 45 years old in 2025.

What condition is County RD 449 over Trib of Littleby C 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 449 over Trib of Littleby C carry?

About 35 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 449 over Trib of Littleby C?

The structure is 44 ft (13.4 m) long with a longest span of 14 ft (4.3 m) and a deck 28 ft wide.

Who owns County RD 449 over Trib of Littleby C?

It is owned by the County Highway Agency.