US Bridges

Flat River RD E over Branch of Koen Cre

Good

St. Francois County, Missouri · S 15 T 36 N R 5 E · Structure no. 31639

Built
2006
19 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete Continuous
Length
23 ft
2 main spans
Daily traffic
5,572
2024 count
Owner
State
State Highway Agency

About this bridge

Flat River RD E over Branch of Koen Cre is a concrete continuous culvert carrying Flat River RD E over Branch of Koen Cre in St. Francois County, Missouri. It was built in 2006, so it is 19 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,572 vehicles a day, roughly 5% of them trucks, projected to reach 8,915 by 2044. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 16.2 mi (26 km).

CarriesFlat River RD E
CrossesBranch of Koen Cre
LocationS 15 T 36 N R 5 E
RouteCounty Highway 0
Coordinates37.82561, -90.45952
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.2 US tons
Inventory rating57.5 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,572 (2024)
Projected traffic8,915 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Flat River RD E over Branch of Koen Cre built?

It was built in 2006, making it 19 years old in 2025.

What condition is Flat River RD E over Branch of Koen Cre in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Flat River RD E over Branch of Koen Cre carry?

About 5,572 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Flat River RD E over Branch of Koen Cre?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3 m).

Who owns Flat River RD E over Branch of Koen Cre?

It is owned by the State Highway Agency.