US Bridges

Hartsburg Bottomrd over Hart CR

Good

Boone County, Missouri · S 18 T 45 N R 12 W · Structure no. 36582

Built
2021
4 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
123 ft
1 main span
Daily traffic
113
2023 count
Owner
County
County Highway Agency

About this bridge

Hartsburg Bottomrd over Hart CR is a steel stringer/multi-beam or girder carrying Hartsburg Bottomrd over Hart CR in Boone County, Missouri. It was built in 2021, so it is 4 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 113 vehicles a day, roughly 10% of them trucks, projected to reach 215 by 2043. The structure is 123 ft (37.5 m) long and 25 ft wide.

CarriesHartsburg Bottomrd
CrossesHart CR
LocationS 18 T 45 N R 12 W
RouteCounty Highway 401
Coordinates38.68103, -92.32628
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure9 ExcellentNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating97.2 US tons
Inventory rating75.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length123 ft (37.5 m)
Longest span119 ft (36.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2023)
Projected traffic215 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hartsburg Bottomrd over Hart CR built?

It was built in 2021, making it 4 years old in 2025.

What condition is Hartsburg Bottomrd over Hart CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Hartsburg Bottomrd over Hart CR carry?

About 113 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Hartsburg Bottomrd over Hart CR?

The structure is 123 ft (37.5 m) long with a longest span of 119 ft (36.3 m) and a deck 25 ft wide.

Who owns Hartsburg Bottomrd over Hart CR?

It is owned by the County Highway Agency.