US Bridges

Orear RD over Hinkson CR

GoodPosted for load

Boone County, Missouri · S 11 T 49 N R 12 W · Structure no. 28827

Built
1970
55 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
78 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

Orear RD over Hinkson CR is a steel stringer/multi-beam or girder carrying Orear RD over Hinkson CR in Boone County, Missouri. It was built in 1970, so it is 55 years old, older 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 7 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 250 vehicles a day, roughly 4% of them trucks, projected to reach 438 by 2043. The structure is 78 ft (23.8 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesOrear RD
CrossesHinkson CR
LocationS 11 T 49 N R 12 W
RouteCounty Highway 279
Coordinates39.0435, -92.22686
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be 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 rating45.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length78 ft (23.8 m)
Longest span76 ft (23.2 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic438 by 2043
Trucks4%
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 Orear RD over Hinkson CR built?

It was built in 1970, making it 55 years old in 2025.

What condition is Orear RD over Hinkson 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 Orear RD over Hinkson CR carry?

About 250 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Orear RD over Hinkson CR?

The structure is 78 ft (23.8 m) long with a longest span of 76 ft (23.2 m) and a deck 21 ft wide.

Who owns Orear RD over Hinkson CR?

It is owned by the County Highway Agency.