Csah 20 over Stream

Good

Lyon County, Minnesota · 1.2 MI E of JCT TH 59 · Structure no. 95417

Built: 1981; 44 years old
Condition: Good; inspected October 2023
Type: Culvert; Concrete
Length: 48 ft; 3 main spans
Daily traffic: 83; 2022 count
Owner: County; County Highway Agency

About this bridge

Csah 20 over Stream is a concrete culvert carrying Csah 20 over Stream in Lyon County, Minnesota. It was built in 1981, so it is 44 years old, older 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 83 vehicles a day, projected to reach 30 by 2042. The structure is 48 ft (14.5 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCsah 20

CrossesStream

Location1.2 MI E of JCT TH 59

RouteCounty Highway 20

CountyLyon County

StateMinnesota

Coordinates44.35588, -95.7309

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.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	8 Very Good	No problems noted.

Last inspectionOctober 2023

Inspection intervalevery 24 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 rating59.4 US tons

Inventory rating39.6 US tons

Structure

Structure typeCulvert

MaterialConcrete

DeckNot applicable

Main spans3

Design loadHS 20

Structure length48 ft (14.5 m)

Longest span13 ft (4 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83 (2022)

Projected traffic30 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 Stream built?

It was built in 1981, making it 44 years old in 2025.

What condition is Csah 20 over 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 2023.

How much traffic does Csah 20 over Stream carry?

About 83 vehicles per day (2022 count).

How long is Csah 20 over Stream?

The structure is 48 ft (14.5 m) long with a longest span of 13 ft (4 m).

Who owns Csah 20 over Stream?

It is owned by the County Highway Agency.