US Bridges

Smith Hatchery RD over Lit Bonne Femme CR

Fair

Boone County, Missouri · S 33 T 47 N R 13 W · Structure no. 24481

Built
1981
44 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
161 ft
4 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Smith Hatchery RD over Lit Bonne Femme CR is a prestressed concrete tee beam carrying Smith Hatchery RD over Lit Bonne Femme CR in Boone County, Missouri. It was built in 1981, so it is 44 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 190 by 2043. The structure is 161 ft (49.1 m) long and 23 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSmith Hatchery RD
CrossesLit Bonne Femme CR
LocationS 33 T 47 N R 13 W
RouteCounty Highway 498
Coordinates38.81842, -92.38529
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating68.5 US tons
Inventory rating42.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length161 ft (49.1 m)
Longest span40 ft (12.2 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic190 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Smith Hatchery RD over Lit Bonne Femme CR built?

It was built in 1981, making it 44 years old in 2025.

What condition is Smith Hatchery RD over Lit Bonne Femme 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 December 2024.

How much traffic does Smith Hatchery RD over Lit Bonne Femme CR carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Smith Hatchery RD over Lit Bonne Femme CR?

The structure is 161 ft (49.1 m) long with a longest span of 40 ft (12.2 m) and a deck 23 ft wide.

Who owns Smith Hatchery RD over Lit Bonne Femme CR?

It is owned by the County Highway Agency.