US Bridges

Ut 71 over Carlson Creek

Good

Cook County, Minnesota · 1.2 MI N of JCT TH 61 · Structure no. 16J29

Built
2022
3 years old
Condition
Good
inspected September 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
65
2018 count
Owner
County
County Highway Agency

About this bridge

Ut 71 over Carlson Creek is a concrete culvert carrying Ut 71 over Carlson Creek in Cook County, Minnesota. It was built in 2022, so it is 3 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 65 vehicles a day, projected to reach 41 by 2038. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 123 mi (198 km).

CarriesUt 71
CrossesCarlson Creek
Location1.2 MI N of JCT TH 61
RouteCounty Highway 71
Coordinates47.87433, -89.93917
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length30 ft (9.1 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2018)
Projected traffic41 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Ut 71 over Carlson Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Ut 71 over Carlson Creek 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 September 2024.

How much traffic does Ut 71 over Carlson Creek carry?

About 65 vehicles per day (2018 count).

How long is Ut 71 over Carlson Creek?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.2 m).

Who owns Ut 71 over Carlson Creek?

It is owned by the County Highway Agency.