US Bridges

Mn 43 over Stream

Fair

Fillmore County, Minnesota · 0.1 MI N of JCT TH 44 · Structure no. 6351

Built
1940
85 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
1,250
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 43 over Stream is a concrete culvert carrying Mn 43 over Stream in Fillmore County, Minnesota. It was built in 1940, so it is 85 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 1,250 vehicles a day, roughly 12% of them trucks, projected to reach 1,300 by 2039. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 18 mi (29 km).

CarriesMn 43
CrossesStream
Location0.1 MI N of JCT TH 44
RouteState Highway 43
Coordinates43.52476, -91.76994
Functional classRural Major Collector

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 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 rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length33 ft (10.1 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2019)
Projected traffic1,300 by 2039
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

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$207 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 43 over Stream built?

It was built in 1940, making it 85 years old in 2025.

What condition is Mn 43 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 May 2024.

How much traffic does Mn 43 over Stream carry?

About 1,250 vehicles per day (2019 count), of which roughly 12% are trucks.

How long is Mn 43 over Stream?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3.2 m).

Who owns Mn 43 over Stream?

It is owned by the State Highway Agency.