US Bridges

County RD Stockade over Hackberry Br

FairPosted for load

Vernon County, Missouri · S 28 T 35 N R 32 W · Structure no. 24611

Built
1920
105 years old, rebuilt 1989
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD Stockade over Hackberry Br is a steel stringer/multi-beam or girder carrying County RD Stockade over Hackberry Br in Vernon County, Missouri. It was built in 1920 and reconstructed in 1989, so it is 105 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 45 ft (13.7 m) long and 18 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty RD Stockade
CrossesHackberry Br
LocationS 28 T 35 N R 32 W
RouteCounty Highway 518
CountyVernon County
StateMissouri
Coordinates37.7819, -94.47123
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating14.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length45 ft (13.7 m)
Longest span42 ft (12.8 m)
Deck width18 ft (5.4 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic39 by 2044
Trucks10%
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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$249,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD Stockade over Hackberry Br built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1989.

What condition is County RD Stockade over Hackberry Br 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 February 2024.

How much traffic does County RD Stockade over Hackberry Br carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD Stockade over Hackberry Br?

The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 18 ft wide.

Who owns County RD Stockade over Hackberry Br?

It is owned by the County Highway Agency.