US Bridges

Harpst RD over Br of Bear CR

GoodPosted for load

Platte County, Missouri · S 11 T 53 N R 36 W · Structure no. 36595

Built
2021
4 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
106 ft
1 main span
Daily traffic
225
2024 count
Owner
County
County Highway Agency

About this bridge

Harpst RD over Br of Bear CR is a prestressed concrete tee beam carrying Harpst RD over Br of Bear CR in Platte 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 225 vehicles a day, roughly 10% of them trucks, projected to reach 416 by 2044. The structure is 106 ft (32.3 m) long and 24 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

CarriesHarpst RD
CrossesBr of Bear CR
LocationS 11 T 53 N R 36 W
RouteCounty Highway 156
Coordinates39.41753, -94.9147
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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating76.4 US tons
Inventory rating59.5 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span102 ft (31.1 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2024)
Projected traffic416 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local 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 Harpst RD over Br of Bear CR built?

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

What condition is Harpst RD over Br of Bear 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 April 2024.

How much traffic does Harpst RD over Br of Bear CR carry?

About 225 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Harpst RD over Br of Bear CR?

The structure is 106 ft (32.3 m) long with a longest span of 102 ft (31.1 m) and a deck 24 ft wide.

Who owns Harpst RD over Br of Bear CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.