US Bridges

Mo 149 S over Lit Walnut CR

Fair

Macon County, Missouri · S 14 T 60 N R 17 W · Structure no. 9885

Built
1949
76 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
29
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 149 S over Lit Walnut CR is a concrete continuous culvert carrying Mo 149 S over Lit Walnut CR in Macon County, Missouri. It was built in 1949, so it is 76 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 29 vehicles a day, roughly 13% of them trucks, projected to reach 36 by 2044. The structure is 21 ft (6.4 m) long and 23 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesMo 149 S
CrossesLit Walnut CR
LocationS 14 T 60 N R 17 W
RouteState Highway 149
Coordinates40.01891, -92.75771
Functional classRural Major Collector

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 10
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width23 ft (7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29 (2024)
Projected traffic36 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 149 S over Lit Walnut CR built?

It was built in 1949, making it 76 years old in 2025.

What condition is Mo 149 S over Lit Walnut 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 September 2023.

How much traffic does Mo 149 S over Lit Walnut CR carry?

About 29 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 149 S over Lit Walnut CR?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 23 ft wide.

Who owns Mo 149 S over Lit Walnut CR?

It is owned by the State Highway Agency.