US Bridges

Csah 20 over Unnamed Stream

Good

Nobles County, Minnesota · 1.0 MI W of JCT Csah 19 · Structure no. 53K19

Built
2022
3 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
740
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Unnamed Stream is a concrete culvert carrying Csah 20 over Unnamed Stream in Nobles County, Minnesota. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 740 vehicles a day, projected to reach 1,153 by 2039. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCsah 20
CrossesUnnamed Stream
Location1.0 MI W of JCT Csah 19
RouteCounty Highway 20
CountyNobles County
StateMinnesota
Coordinates43.8338, -96.04379
Functional classRural Major 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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 loadHL 93
Structure length22 ft (6.6 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 traffic740 (2019)
Projected traffic1,153 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 20 over Unnamed Stream built?

It was built in 2022, making it 3 years old in 2025.

What condition is Csah 20 over Unnamed Stream 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 October 2022.

How much traffic does Csah 20 over Unnamed Stream carry?

About 740 vehicles per day (2019 count).

How long is Csah 20 over Unnamed Stream?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3 m).

Who owns Csah 20 over Unnamed Stream?

It is owned by the County Highway Agency.