US Bridges

Csah 6 over Little ST Francis River

Fair

Benton County, Minnesota · 1.6 MI N of JCT TH 23 · Structure no. 93344

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
900
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 6 over Little ST Francis River is a concrete culvert carrying Csah 6 over Little ST Francis River in Benton County, Minnesota. It was built in 1978, so it is 47 years old, older than the Minnesota average of 38.5 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 900 vehicles a day, projected to reach 820 by 2039. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCsah 6
CrossesLittle ST Francis River
Location1.6 MI N of JCT TH 23
RouteCounty Highway 6
Coordinates45.70518, -93.86463
Functional classRural Major Collector

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 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 traffic900 (2019)
Projected traffic820 by 2039
Trucks—
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 Csah 6 over Little ST Francis River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Csah 6 over Little ST Francis River 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 September 2023.

How much traffic does Csah 6 over Little ST Francis River carry?

About 900 vehicles per day (2019 count).

How long is Csah 6 over Little ST Francis River?

The structure is 24 ft (7.3 m) long with a longest span of 10 ft (3 m).

Who owns Csah 6 over Little ST Francis River?

It is owned by the County Highway Agency.