US Bridges

Csah 20 over Trib CO Ditch # 1A

Good

Wilkin County, Minnesota · 0.1 MI W of JCT Csah 15 · Structure no. 97974

Built
1995
30 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
54
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Trib CO Ditch # 1A is a concrete culvert carrying Csah 20 over Trib CO Ditch # 1A in Wilkin County, Minnesota. It was built in 1995, so it is 30 years old, younger than the Minnesota average of 38.5 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 54 vehicles a day, projected to reach 25 by 2042. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 20
CrossesTrib CO Ditch # 1A
Location0.1 MI W of JCT Csah 15
RouteCounty Highway 20
Coordinates46.41288, -96.40417
Functional classRural Minor Collector

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 inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length22 ft (6.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (2022)
Projected traffic25 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 20 over Trib CO Ditch # 1A built?

It was built in 1995, making it 30 years old in 2025.

What condition is Csah 20 over Trib CO Ditch # 1A 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 September 2024.

How much traffic does Csah 20 over Trib CO Ditch # 1A carry?

About 54 vehicles per day (2022 count).

How long is Csah 20 over Trib CO Ditch # 1A?

The structure is 22 ft (6.6 m) long with a longest span of 8 ft (2.4 m).

Who owns Csah 20 over Trib CO Ditch # 1A?

It is owned by the County Highway Agency.