US Bridges

County RD 412 over Branch

Fair

Knox County, Missouri · S 5 T 62 N R 12 W · Structure no. 28750

Built
2001
24 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 412 over Branch is a steel culvert carrying County RD 412 over Branch in Knox County, Missouri. It was built in 2001, so it is 24 years old, younger 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 25 by 2044. The structure is 22 ft (6.7 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCounty RD 412
CrossesBranch
LocationS 5 T 62 N R 12 W
RouteCounty Highway 412
CountyKnox County
StateMissouri
Coordinates40.21606, -92.25742
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadOther
Structure length22 ft (6.7 m)
Longest span8 ft (2.4 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic25 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 County RD 412 over Branch built?

It was built in 2001, making it 24 years old in 2025.

What condition is County RD 412 over Branch 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 August 2023.

How much traffic does County RD 412 over Branch carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 412 over Branch?

The structure is 22 ft (6.7 m) long with a longest span of 8 ft (2.4 m) and a deck 40 ft wide.

Who owns County RD 412 over Branch?

It is owned by the County Highway Agency.