US Bridges

Hartsburg Bottm RD over Small Str

Fair

Boone County, Missouri · S 23 T 45 N R 12 W · Structure no. 23199

Built
1982
43 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
25
2023 count
Owner
County
County Highway Agency

About this bridge

Hartsburg Bottm RD over Small Str is a prestressed concrete tee beam carrying Hartsburg Bottm RD over Small Str in Boone County, Missouri. It was built in 1982, so it is 43 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 48 by 2043. The structure is 56 ft (17.1 m) long and 23 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesHartsburg Bottm RD
CrossesSmall Str
LocationS 23 T 45 N R 12 W
RouteCounty Highway 395
CountyBoone County
StateMissouri
Coordinates38.65875, -92.25692
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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 rating59.5 US tons
Inventory rating29.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2023)
Projected traffic48 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Hartsburg Bottm RD over Small Str built?

It was built in 1982, making it 43 years old in 2025.

What condition is Hartsburg Bottm RD over Small Str 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 Hartsburg Bottm RD over Small Str carry?

About 25 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Hartsburg Bottm RD over Small Str?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 23 ft wide.

Who owns Hartsburg Bottm RD over Small Str?

It is owned by the County Highway Agency.