US Bridges

Mn 238 over Swan River

Fair

Morrison County, Minnesota · 3.0 MI S of Little Falls · Structure no. 49007

Built
2009
16 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
104 ft
3 main spans
Daily traffic
1,349
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 238 over Swan River is a prestressed concrete tee beam carrying Mn 238 over Swan River in Morrison County, Minnesota. It was built in 2009, so it is 16 years old, younger 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 1,349 vehicles a day, roughly 8% of them trucks, projected to reach 1,350 by 2041. The structure is 104 ft (31.8 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMn 238
CrossesSwan River
Location3.0 MI S of Little Falls
RouteState Highway 238
CountyMorrison County
StateMinnesota
Coordinates45.93375, -94.4101
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.3 US tons
Inventory rating61.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length104 ft (31.8 m)
Longest span35 ft (10.6 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,349 (2021)
Projected traffic1,350 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 238 over Swan River built?

It was built in 2009, making it 16 years old in 2025.

What condition is Mn 238 over Swan 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 238 over Swan River carry?

About 1,349 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Mn 238 over Swan River?

The structure is 104 ft (31.8 m) long with a longest span of 35 ft (10.6 m) and a deck 39 ft wide.

Who owns Mn 238 over Swan River?

It is owned by the State Highway Agency.