US Bridges

Locust Grove Ch RD over Trib of Callahan C

Good

Boone County, Missouri · S 24 T 49 N R 14 W · Structure no. 15998

Built
1980
45 years old
Condition
Good
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

Locust Grove Ch RD over Trib of Callahan C is a prestressed concrete tee beam carrying Locust Grove Ch RD over Trib of Callahan C in Boone County, Missouri. It was built in 1980, so it is 45 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 95 by 2043. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesLocust Grove Ch RD
CrossesTrib of Callahan C
LocationS 24 T 49 N R 14 W
RouteCounty Highway 106
Coordinates39.0305, -92.44708
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable 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 alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating37.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic95 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Locust Grove Ch RD over Trib of Callahan C built?

It was built in 1980, making it 45 years old in 2025.

What condition is Locust Grove Ch RD over Trib of Callahan C 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 Locust Grove Ch RD over Trib of Callahan C carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Locust Grove Ch RD over Trib of Callahan C?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 23 ft wide.

Who owns Locust Grove Ch RD over Trib of Callahan C?

It is owned by the County Highway Agency.