US Bridges

Hammond over Br of Sni-A-Bar CR

Poor

Jackson County, Missouri · S 2 T 47 N R 30 W · Structure no. 20707

Built
1955
70 years old
Condition
Poor
inspected March 2023
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
249
2024 count
Owner
County
County Highway Agency

About this bridge

Hammond over Br of Sni-A-Bar CR is a concrete culvert carrying Hammond over Br of Sni-A-Bar CR in Jackson County, Missouri. It was built in 1955, so it is 70 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 249 vehicles a day, roughly 5% of them trucks, projected to reach 374 by 2044. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesHammond
CrossesBr of Sni-A-Bar CR
LocationS 2 T 47 N R 30 W
RouteCounty Highway 271
CountyJackson County
StateMissouri
Coordinates38.91991, -94.19235
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length33 ft (10.1 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 traffic249 (2024)
Projected traffic374 by 2044
Trucks5%
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$153,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hammond over Br of Sni-A-Bar CR built?

It was built in 1955, making it 70 years old in 2025.

What condition is Hammond over Br of Sni-A-Bar CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

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

About 249 vehicles per day (2024 count), of which roughly 5% are trucks.

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

The structure is 33 ft (10.1 m) long with a longest span of 13 ft (4 m).

Who owns Hammond over Br of Sni-A-Bar CR?

It is owned by the County Highway Agency.