US Bridges

County Road 309 over Branch-Creek

Fair

Scotland County, Missouri · S 33 T 65 N R 12 W · Structure no. 19800

Built
1987
38 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

County Road 309 over Branch-Creek is a concrete culvert carrying County Road 309 over Branch-Creek in Scotland County, Missouri. It was built in 1987, so it is 38 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 63 by 2044. The structure is 27 ft (8.2 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 309
CrossesBranch-Creek
LocationS 33 T 65 N R 12 W
RouteCounty Highway 234
CountyScotland County
StateMissouri
Coordinates40.40228, -92.24461
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 inspectionJune 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic63 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-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 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 Road 309 over Branch-Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is County Road 309 over Branch-Creek 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 June 2023.

How much traffic does County Road 309 over Branch-Creek carry?

About 50 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County Road 309 over Branch-Creek?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 21 ft wide.

Who owns County Road 309 over Branch-Creek?

It is owned by the County Highway Agency.