US Bridges

Csah 20 over CO Ditch # 2

Fair

Polk County, Minnesota · 0.1 MI S of JCT Csah 67 · Structure no. 90084

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
754
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over CO Ditch # 2 is a concrete culvert carrying Csah 20 over CO Ditch # 2 in Polk County, Minnesota. It was built in 1969, so it is 56 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 5 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 754 vehicles a day, projected to reach 640 by 2041. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 20
CrossesCO Ditch # 2
Location0.1 MI S of JCT Csah 67
RouteCounty Highway 20
CountyPolk County
StateMinnesota
Coordinates48.04998, -96.78164
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length29 ft (8.7 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 traffic754 (2021)
Projected traffic640 by 2041
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 20 over CO Ditch # 2 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 20 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 2023.

How much traffic does Csah 20 over CO Ditch # 2 carry?

About 754 vehicles per day (2021 count).

How long is Csah 20 over CO Ditch # 2?

The structure is 29 ft (8.7 m) long with a longest span of 11 ft (3.5 m).

Who owns Csah 20 over CO Ditch # 2?

It is owned by the County Highway Agency.