US Bridges

Helmig Road over Br of Sni-A-Bar CR

Good

Jackson County, Missouri · S 12 T 47 N R 30 W · Structure no. 37099

Built
2024
1 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
147
2024 count
Owner
County
County Highway Agency

About this bridge

Helmig Road over Br of Sni-A-Bar CR is a concrete culvert carrying Helmig Road over Br of Sni-A-Bar CR in Jackson County, Missouri. It was built in 2024, so it is 1 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: new structure not yet open to traffic.

It carries about 147 vehicles a day, roughly 2% of them trucks, projected to reach 221 by 2044. The structure is 23 ft (6.9 m) long and 87 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesHelmig Road
CrossesBr of Sni-A-Bar CR
LocationS 12 T 47 N R 30 W
RouteCounty Highway 329
CountyJackson County
StateMissouri
Coordinates38.89878, -94.17637
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 protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusNew structure not yet open to traffic
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (3.2 m)
Deck width87 ft (26.6 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147 (2024)
Projected traffic221 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Helmig Road over Br of Sni-A-Bar CR built?

It was built in 2024, making it 1 years old in 2025.

What condition is Helmig Road 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 December 2023.

How much traffic does Helmig Road over Br of Sni-A-Bar CR carry?

About 147 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Helmig Road over Br of Sni-A-Bar CR?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3.2 m) and a deck 87 ft wide.

Who owns Helmig Road over Br of Sni-A-Bar CR?

It is owned by the County Highway Agency.