US Bridges

Farm RD 1230 over Mill CR

Fair

Barry County, Missouri · S 16 T 22 N R 25 W · Structure no. 25267

Built
1939
86 years old, rebuilt 1999
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
300
2024 count
Owner
County
County Highway Agency

About this bridge

Farm RD 1230 over Mill CR is a concrete continuous slab carrying Farm RD 1230 over Mill CR in Barry County, Missouri. It was built in 1939 and reconstructed in 1999, so it is 86 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.

It carries about 300 vehicles a day, roughly 10% of them trucks, projected to reach 510 by 2044. The structure is 34 ft (10.4 m) long and 27 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

Open in Google Maps
CarriesFarm RD 1230
CrossesMill CR
LocationS 16 T 22 N R 25 W
RouteCounty Highway 779
CountyBarry County
StateMissouri
Coordinates36.61899, -93.64111
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating24.8 US tons
Inventory rating14.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2024)
Projected traffic510 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 Farm RD 1230 over Mill CR built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1999.

What condition is Farm RD 1230 over Mill 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 Farm RD 1230 over Mill CR carry?

About 300 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Farm RD 1230 over Mill CR?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 27 ft wide.

Who owns Farm RD 1230 over Mill CR?

It is owned by the County Highway Agency.