US Bridges

Mn 4 over Spring Creek

Fair

Brown County, Minnesota · 2.7 MI S of Minn River · Structure no. 472

Built
1930
95 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,400
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 4 over Spring Creek is a concrete culvert carrying Mn 4 over Spring Creek in Brown County, Minnesota. It was built in 1930, so it is 95 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 5 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 1,400 vehicles a day, roughly 19% of them trucks, projected to reach 1,450 by 2041. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesMn 4
CrossesSpring Creek
Location2.7 MI S of Minn River
RouteState Highway 4
CountyBrown County
StateMinnesota
Coordinates44.40371, -94.72915
Functional classRural Minor Arterial

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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 loadH 15
Structure length22 ft (6.7 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 traffic1,400 (2021)
Projected traffic1,450 by 2041
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$30 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 4 over Spring Creek built?

It was built in 1930, making it 95 years old in 2025.

What condition is Mn 4 over Spring Creek 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 June 2024.

How much traffic does Mn 4 over Spring Creek carry?

About 1,400 vehicles per day (2021 count), of which roughly 19% are trucks.

How long is Mn 4 over Spring Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Mn 4 over Spring Creek?

It is owned by the State Highway Agency.