US Bridges

Gardner RD over Br of Sni-A-Bar CR

Good

Jackson County, Missouri · S 18 T 49 N R 29 W · Structure no. 16686

Built
1965
60 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
209
2024 count
Owner
County
County Highway Agency

About this bridge

Gardner RD over Br of Sni-A-Bar CR is a concrete culvert carrying Gardner RD over Br of Sni-A-Bar CR in Jackson 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 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.

It carries about 209 vehicles a day, roughly 5% of them trucks, projected to reach 314 by 2044. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesGardner RD
CrossesBr of Sni-A-Bar CR
LocationS 18 T 49 N R 29 W
RouteCounty Highway 129
Coordinates39.05752, -94.15023
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.7 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length32 ft (9.8 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic209 (2024)
Projected traffic314 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Gardner RD over Br of Sni-A-Bar CR built?

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

What condition is Gardner RD over Br of Sni-A-Bar 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 February 2023.

How much traffic does Gardner RD over Br of Sni-A-Bar CR carry?

About 209 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Gardner RD over Br of Sni-A-Bar CR?

The structure is 32 ft (9.8 m) long with a longest span of 13 ft (4 m).

Who owns Gardner RD over Br of Sni-A-Bar CR?

It is owned by the County Highway Agency.