US Bridges

Mn 23 over Stream

Fair

Rock County, Minnesota · 2.9 MI S of Jasper · Structure no. 8798

Built
1953
72 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,725
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 23 over Stream is a concrete culvert carrying Mn 23 over Stream in Rock County, Minnesota. It was built in 1953, so it is 72 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,725 vehicles a day, roughly 12% of them trucks, projected to reach 1,750 by 2042. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMn 23
CrossesStream
Location2.9 MI S of Jasper
RouteState Highway 23
CountyRock County
StateMinnesota
Coordinates43.80136, -96.40224
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.8 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 traffic1,725 (2022)
Projected traffic1,750 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$73 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 23 over Stream built?

It was built in 1953, making it 72 years old in 2025.

What condition is Mn 23 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Mn 23 over Stream carry?

About 1,725 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Mn 23 over Stream?

The structure is 22 ft (6.8 m) long with a longest span of 10 ft (3 m).

Who owns Mn 23 over Stream?

It is owned by the State Highway Agency.