US Bridges

County RD C-230 over Hunter CR

FairPosted for load

Douglas County, Missouri · S 20 T 26 N R 14 W · Structure no. 16774

Built
1950
75 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
33 ft
4 main spans
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

County RD C-230 over Hunter CR is a concrete continuous slab carrying County RD C-230 over Hunter CR in Douglas County, Missouri. It was built in 1950, so it is 75 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 5 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 58 by 2044. The structure is 33 ft (10.1 m) long and 10 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesCounty RD C-230
CrossesHunter CR
LocationS 20 T 26 N R 14 W
RouteCounty Highway 132
CountyDouglas County
StateMissouri
Coordinates36.91782, -92.49538
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating31.7 US tons
Inventory rating18.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length33 ft (10.1 m)
Longest span11 ft (3.4 m)
Deck width10 ft (3 m)
Roadway width10 ft (3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic58 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD C-230 over Hunter CR built?

It was built in 1950, making it 75 years old in 2025.

What condition is County RD C-230 over Hunter 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 February 2024.

How much traffic does County RD C-230 over Hunter CR carry?

About 40 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD C-230 over Hunter CR?

The structure is 33 ft (10.1 m) long with a longest span of 11 ft (3.4 m) and a deck 10 ft wide.

Who owns County RD C-230 over Hunter CR?

It is owned by the County Highway Agency.