US Bridges

Kircher RD over Trib to Hinkson CR

Fair

Boone County, Missouri · S 13 T 49 N R 12 W · Structure no. 21132

Built
1981
44 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

Kircher RD over Trib to Hinkson CR is a prestressed concrete tee beam carrying Kircher RD over Trib to Hinkson 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 250 vehicles a day, roughly 6% of them trucks, projected to reach 475 by 2043. The structure is 56 ft (17.1 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesKircher RD
CrossesTrib to Hinkson CR
LocationS 13 T 49 N R 12 W
RouteCounty Highway 291
CountyBoone County
StateMissouri
Coordinates39.03464, -92.22572
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo 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 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 alignment8: Equal to present desirable criteria
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 traffic250 (2023)
Projected traffic475 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Kircher RD over Trib to Hinkson CR built?

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

What condition is Kircher RD over Trib to Hinkson 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 Kircher RD over Trib to Hinkson CR carry?

About 250 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Kircher RD over Trib to Hinkson CR?

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 Kircher RD over Trib to Hinkson CR?

It is owned by the County Highway Agency.