US Bridges

Mn 23 over Unnamed Stream

Good

Lyon County, Minnesota · 1.1 MI N of JCT TH 14 · Structure no. 42X12

Built
2024
1 years old
Condition
Good
inspected February 2025
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
2,763
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 23 over Unnamed Stream is a concrete culvert carrying Mn 23 over Unnamed Stream in Lyon County, Minnesota. It was built in 2024, so it is 1 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 2,763 vehicles a day, roughly 21% of them trucks, projected to reach 3,320 by 2043. The structure is 28 ft (8.6 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMn 23
CrossesUnnamed Stream
Location1.1 MI N of JCT TH 14
RouteState Highway 23
CountyLyon County
StateMinnesota
Coordinates44.24986, -96.0332
Functional classRural Principal Arterial - Other

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 inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy9: Superior 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 length28 ft (8.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,763 (2022)
Projected traffic3,320 by 2043
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mn 23 over Unnamed Stream built?

It was built in 2024, making it 1 years old in 2025.

What condition is Mn 23 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 February 2025.

How much traffic does Mn 23 over Unnamed Stream carry?

About 2,763 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is Mn 23 over Unnamed Stream?

The structure is 28 ft (8.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Mn 23 over Unnamed Stream?

It is owned by the State Highway Agency.