US Bridges

Csah 21 over CO Ditch # 2

Fair

Polk County, Minnesota · 2.5 MI E of JCT Csah 20 · Structure no. 97525

Built
1992
33 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
1,030
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 21 over CO Ditch # 2 is a concrete culvert carrying Csah 21 over CO Ditch # 2 in Polk County, Minnesota. It was built in 1992, so it is 33 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 1,030 vehicles a day, projected to reach 1,850 by 2042. The structure is 26 ft (8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 21
CrossesCO Ditch # 2
Location2.5 MI E of JCT Csah 20
RouteCounty Highway 21
Coordinates48.02118, -96.73003
Functional classRural Minor Arterial

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal 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 length26 ft (8 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,030 (2022)
Projected traffic1,850 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 21 over CO Ditch # 2 built?

It was built in 1992, making it 33 years old in 2025.

What condition is Csah 21 over CO Ditch # 2 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 October 2024.

How much traffic does Csah 21 over CO Ditch # 2 carry?

About 1,030 vehicles per day (2022 count).

How long is Csah 21 over CO Ditch # 2?

The structure is 26 ft (8 m) long with a longest span of 10 ft (3.1 m).

Who owns Csah 21 over CO Ditch # 2?

It is owned by the County Highway Agency.