US Bridges

Sugar Grove RD over Gans CR

FairPosted for load

Boone County, Missouri · S 27 T 48 N R 12 W · Structure no. 22214

Built
1965
60 years old
Condition
Fair
inspected December 2024
Type
Channel Beam
Concrete
Length
34 ft
1 main span
Daily traffic
10
2023 count
Owner
County
County Highway Agency

About this bridge

Sugar Grove RD over Gans CR is a concrete channel beam carrying Sugar Grove RD over Gans CR in Boone County, Missouri. It was built in 1965, so it is 60 years old, older 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. Its operating status is: posted for load restriction.

It carries about 10 vehicles a day, roughly 10% of them trucks, projected to reach 19 by 2043. The structure is 34 ft (10.4 m) long and 25 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesSugar Grove RD
CrossesGans CR
LocationS 27 T 48 N R 12 W
RouteCounty Highway 346
CountyBoone County
StateMissouri
Coordinates38.90511, -92.25717
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating92.3 US tons
Inventory rating55.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2023)
Projected traffic19 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Sugar Grove RD over Gans CR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Sugar Grove RD over Gans 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 Sugar Grove RD over Gans CR carry?

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

How long is Sugar Grove RD over Gans CR?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 25 ft wide.

Who owns Sugar Grove RD over Gans CR?

It is owned by the County Highway Agency.