US Bridges

Mn 73 over W Br Kettle River

Fair

Carlton County, Minnesota · 10.3 MI S of JCT TH 210 · Structure no. 09019

Built
2017
8 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
1,007
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 73 over W Br Kettle River is a prestressed concrete stringer/multi-beam or girder carrying Mn 73 over W Br Kettle River in Carlton County, Minnesota. It was built in 2017, so it is 8 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 1,007 vehicles a day, roughly 1% of them trucks, projected to reach 1,400 by 2042. The structure is 62 ft (19 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesMn 73
CrossesW Br Kettle River
Location10.3 MI S of JCT TH 210
RouteState Highway 73
CountyCarlton County
StateMinnesota
Coordinates46.54394, -92.90898
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length62 ft (19 m)
Longest span60 ft (18.2 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,007 (2022)
Projected traffic1,400 by 2042
Trucks1%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 73 over W Br Kettle River built?

It was built in 2017, making it 8 years old in 2025.

What condition is Mn 73 over W Br Kettle 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 73 over W Br Kettle River carry?

About 1,007 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Mn 73 over W Br Kettle River?

The structure is 62 ft (19 m) long with a longest span of 60 ft (18.2 m) and a deck 39 ft wide.

Who owns Mn 73 over W Br Kettle River?

It is owned by the State Highway Agency.