US Bridges

Mn 93 over Minnesota River

Fair

Sibley County, Minnesota · 0.7 MI E of JCT TH 169 · Structure no. 72007

Built
1984
41 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
421 ft
5 main spans
Daily traffic
5,120
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 93 over Minnesota River is a steel continuous stringer/multi-beam or girder carrying Mn 93 over Minnesota River in Sibley County, Minnesota. It was built in 1984, so it is 41 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 5,120 vehicles a day, roughly 7% of them trucks, projected to reach 5,400 by 2041. The structure is 421 ft (128.2 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMn 93
CrossesMinnesota River
Location0.7 MI E of JCT TH 169
RouteState Highway 93
CountySibley County
StateMinnesota
Coordinates44.46208, -93.9176
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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 rating81 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length421 ft (128.2 m)
Longest span90 ft (27.4 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,120 (2021)
Projected traffic5,400 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 93 over Minnesota River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mn 93 over Minnesota 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 April 2023.

How much traffic does Mn 93 over Minnesota River carry?

About 5,120 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Mn 93 over Minnesota River?

The structure is 421 ft (128.2 m) long with a longest span of 90 ft (27.4 m) and a deck 46 ft wide.

Who owns Mn 93 over Minnesota River?

It is owned by the State Highway Agency.