US Bridges

US 71 over TH 23

Good

Kandiyohi County, Minnesota · At the JCT TH 23 · Structure no. 34007

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
311 ft
4 main spans
Daily traffic
4,450
2016 count
Owner
State
State Highway Agency

About this bridge

US 71 over TH 23 is a prestressed concrete stringer/multi-beam or girder carrying US 71 over TH 23 in Kandiyohi County, Minnesota. It was built in 1977, so it is 48 years old, older 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 4,450 vehicles a day, roughly 9% of them trucks, projected to reach 4,450 by 2039. The structure is 311 ft (94.9 m) long and 54 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesUS 71
CrossesTH 23
LocationAt the JCT TH 23
RouteU.S. Route 71
Coordinates45.09051, -95.04296
Functional classUrban Other Principal Arterial

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.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating36.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length311 ft (94.9 m)
Longest span92 ft (28 m)
Deck width54 ft (16.6 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,450 (2016)
Projected traffic4,450 by 2039
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 71 over TH 23 built?

It was built in 1977, making it 48 years old in 2025.

What condition is US 71 over TH 23 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 October 2023.

How much traffic does US 71 over TH 23 carry?

About 4,450 vehicles per day (2016 count), of which roughly 9% are trucks.

How long is US 71 over TH 23?

The structure is 311 ft (94.9 m) long with a longest span of 92 ft (28 m) and a deck 54 ft wide.

Who owns US 71 over TH 23?

It is owned by the State Highway Agency.