US Bridges

County RD 410 over Mill CR

Fair

Andrew County, Missouri · S 15 T 59 N R 36 W · Structure no. 23483

Built
1970
55 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
10
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 410 over Mill CR is a concrete culvert carrying County RD 410 over Mill CR in Andrew County, Missouri. It was built in 1970, so it is 55 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 10 vehicles a day, roughly 10% of them trucks, projected to reach 12 by 2044. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCounty RD 410
CrossesMill CR
LocationS 15 T 59 N R 36 W
RouteCounty Highway 410
CountyAndrew County
StateMissouri
Coordinates39.93566, -94.93214
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length28 ft (8.5 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 traffic10 (2024)
Projected traffic12 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 County RD 410 over Mill CR built?

It was built in 1970, making it 55 years old in 2025.

What condition is County RD 410 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 December 2023.

How much traffic does County RD 410 over Mill CR carry?

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

How long is County RD 410 over Mill CR?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4 m).

Who owns County RD 410 over Mill CR?

It is owned by the County Highway Agency.