US Bridges

Mn 30 over Des Moines River

Fair

Murray County, Minnesota · 1.5 MI E of Currie · Structure no. 6782

Built
1952
73 years old
Condition
Fair
inspected September 2023
Type
Girder and Floorbeam System
Concrete
Length
63 ft
1 main span
Daily traffic
1,200
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 30 over Des Moines River is a concrete girder and floorbeam system carrying Mn 30 over Des Moines River in Murray County, Minnesota. It was built in 1952, so it is 73 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 1,200 vehicles a day, roughly 13% of them trucks, projected to reach 1,450 by 2039. The structure is 63 ft (19.1 m) long and 34 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesMn 30
CrossesDes Moines River
Location1.5 MI E of Currie
RouteState Highway 30
CountyMurray County
StateMinnesota
Coordinates44.06569, -95.64491
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating31.3 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length63 ft (19.1 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2019)
Projected traffic1,450 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$217 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 30 over Des Moines River built?

It was built in 1952, making it 73 years old in 2025.

What condition is Mn 30 over Des Moines River 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 September 2023.

How much traffic does Mn 30 over Des Moines River carry?

About 1,200 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is Mn 30 over Des Moines River?

The structure is 63 ft (19.1 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns Mn 30 over Des Moines River?

It is owned by the State Highway Agency.