US Bridges

Mn 16 over Root River

Fair

Fillmore County, Minnesota · 2.7 MI W of N JCT TH 43 · Structure no. 23015

Built
1988
37 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
716 ft
6 main spans
Daily traffic
1,397
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 16 over Root River is a prestressed concrete stringer/multi-beam or girder carrying Mn 16 over Root River in Fillmore County, Minnesota. It was built in 1988, so it is 37 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 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 1,397 vehicles a day, roughly 10% of them trucks, projected to reach 1,600 by 2042. The structure is 716 ft (218.1 m) long and 42 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesMn 16
CrossesRoot River
Location2.7 MI W of N JCT TH 43
RouteState Highway 16
CountyFillmore County
StateMinnesota
Coordinates43.79781, -91.80406
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length716 ft (218.1 m)
Longest span119 ft (36.2 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,397 (2022)
Projected traffic1,600 by 2042
Trucks10%
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 16 over Root River built?

It was built in 1988, making it 37 years old in 2025.

What condition is Mn 16 over Root 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 May 2024.

How much traffic does Mn 16 over Root River carry?

About 1,397 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Mn 16 over Root River?

The structure is 716 ft (218.1 m) long with a longest span of 119 ft (36.2 m) and a deck 42 ft wide.

Who owns Mn 16 over Root River?

It is owned by the State Highway Agency.