US Bridges

Mn 74 over N Fk Whitewater River

Good

Winona County, Minnesota · 0.6 MI S of JCT Csah 26 · Structure no. 85021

Built
1995
30 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
205 ft
5 main spans
Daily traffic
807
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 74 over N Fk Whitewater River is a concrete continuous slab carrying Mn 74 over N Fk Whitewater River in Winona County, Minnesota. It was built in 1995, so it is 30 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 807 vehicles a day, roughly 7% of them trucks, projected to reach 870 by 2042. The structure is 205 ft (62.4 m) long and 43 ft wide. If it were closed, the detour would be 18 mi (29 km).

CarriesMn 74
CrossesN Fk Whitewater River
Location0.6 MI S of JCT Csah 26
RouteState Highway 74
Coordinates44.08531, -92.02243
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.2 US tons
Inventory rating55.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length205 ft (62.4 m)
Longest span44 ft (13.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic807 (2022)
Projected traffic870 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 74 over N Fk Whitewater River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Mn 74 over N Fk Whitewater River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does Mn 74 over N Fk Whitewater River carry?

About 807 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Mn 74 over N Fk Whitewater River?

The structure is 205 ft (62.4 m) long with a longest span of 44 ft (13.4 m) and a deck 43 ft wide.

Who owns Mn 74 over N Fk Whitewater River?

It is owned by the State Highway Agency.