US Bridges

M 20 over S Br Yellow Medicine R

Poor

Lyon County, Minnesota · 0.2 MI N of JCT Csah 3 · Structure no. L4650

Built
1925
100 years old
Condition
Poor
inspected October 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
25
1992 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 20 over S Br Yellow Medicine R is a concrete culvert carrying M 20 over S Br Yellow Medicine R in Lyon County, Minnesota. It was built in 1925, so it is 100 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 25 vehicles a day, projected to reach 25 by 2029. The structure is 33 ft (10 m) long.

Location

Open in Google Maps
CarriesM 20
CrossesS Br Yellow Medicine R
Location0.2 MI N of JCT Csah 3
RouteCity Street 20
CountyLyon County
StateMinnesota
Coordinates44.56494, -95.98399
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating37.8 US tons
Inventory rating25.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10 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 traffic25 (1992)
Projected traffic25 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 20 over S Br Yellow Medicine R built?

It was built in 1925, making it 100 years old in 2025.

What condition is M 20 over S Br Yellow Medicine R in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does M 20 over S Br Yellow Medicine R carry?

About 25 vehicles per day (1992 count).

How long is M 20 over S Br Yellow Medicine R?

The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).

Who owns M 20 over S Br Yellow Medicine R?

It is owned by the City or Municipal Highway Agency.