US Bridges

County RD 486 over Lit Auxvasse CR

Fair

Callaway County, Missouri · S 36 T 45 N R 10 W · Structure no. 20330

Built
1992
33 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
141 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 486 over Lit Auxvasse CR is a prestressed concrete tee beam carrying County RD 486 over Lit Auxvasse CR in Callaway County, Missouri. It was built in 1992, so it is 33 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 60 by 2043. The structure is 141 ft (43 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 486
CrossesLit Auxvasse CR
LocationS 36 T 45 N R 10 W
RouteCounty Highway 256
CountyCallaway County
StateMissouri
Coordinates38.63574, -91.99595
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 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 evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (43 m)
Longest span47 ft (14.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic60 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 486 over Lit Auxvasse CR built?

It was built in 1992, making it 33 years old in 2025.

What condition is County RD 486 over Lit Auxvasse 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 486 over Lit Auxvasse CR carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 486 over Lit Auxvasse CR?

The structure is 141 ft (43 m) long with a longest span of 47 ft (14.3 m) and a deck 25 ft wide.

Who owns County RD 486 over Lit Auxvasse CR?

It is owned by the County Highway Agency.