US Bridges

Csah 6 over Lower Stanchfield Brook

Fair

Isanti County, Minnesota · 1.8 MI E of JCT Csah 14 · Structure no. 96804

Built
1989
36 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
690
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 6 over Lower Stanchfield Brook is a concrete culvert carrying Csah 6 over Lower Stanchfield Brook in Isanti County, Minnesota. It was built in 1989, so it is 36 years old, younger 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 690 vehicles a day, roughly 8% of them trucks, projected to reach 690 by 2039. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 11.2 mi (18 km).

CarriesCsah 6
CrossesLower Stanchfield Brook
Location1.8 MI E of JCT Csah 14
RouteCounty Highway 6
Coordinates45.63044, -93.23032
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic690 (2016)
Projected traffic690 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Lower Stanchfield Brook built?

It was built in 1989, making it 36 years old in 2025.

What condition is Csah 6 over Lower Stanchfield Brook 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 2024.

How much traffic does Csah 6 over Lower Stanchfield Brook carry?

About 690 vehicles per day (2016 count), of which roughly 8% are trucks.

How long is Csah 6 over Lower Stanchfield Brook?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.5 m).

Who owns Csah 6 over Lower Stanchfield Brook?

It is owned by the County Highway Agency.