US Bridges

Mo 124 E over Grindstone CR

Good

Boone County, Missouri · S 11 T 50 N R 13 W · Structure no. 35963

Built
2019
6 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
143 ft
2 main spans
Daily traffic
2,225
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 124 E over Grindstone CR is a prestressed concrete tee beam carrying Mo 124 E over Grindstone CR in Boone County, Missouri. It was built in 2019, so it is 6 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 2,225 vehicles a day, roughly 8% of them trucks, projected to reach 3,894 by 2044. The structure is 143 ft (43.5 m) long and 29 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 124 E
CrossesGrindstone CR
LocationS 11 T 50 N R 13 W
RouteState Highway 124
CountyBoone County
StateMissouri
Coordinates39.13243, -92.34019
Functional classRural Major Collector

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.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length143 ft (43.5 m)
Longest span90 ft (27.4 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,225 (2024)
Projected traffic3,894 by 2044
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 124 E over Grindstone CR built?

It was built in 2019, making it 6 years old in 2025.

What condition is Mo 124 E over Grindstone 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 September 2023.

How much traffic does Mo 124 E over Grindstone CR carry?

About 2,225 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Mo 124 E over Grindstone CR?

The structure is 143 ft (43.5 m) long with a longest span of 90 ft (27.4 m) and a deck 29 ft wide.

Who owns Mo 124 E over Grindstone CR?

It is owned by the State Highway Agency.