US Bridges

Csah 61 over Prairie River

Good

Itasca County, Minnesota · 1.7 MI E of JCT TH 38 · Structure no. 31586

Built
2024
1 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
3 main spans
Daily traffic
1,020
2024 count
Owner
County
County Highway Agency

About this bridge

Csah 61 over Prairie River is a prestressed concrete stringer/multi-beam or girder carrying Csah 61 over Prairie River in Itasca County, Minnesota. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,020 vehicles a day, projected to reach 1,122 by 2044. The structure is 144 ft (44 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 61
CrossesPrairie River
Location1.7 MI E of JCT TH 38
RouteCounty Highway 61
Coordinates47.28526, -93.49789
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length144 ft (44 m)
Longest span55 ft (16.8 m)
Deck width50 ft (15.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,020 (2024)
Projected traffic1,122 by 2044
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Csah 61 over Prairie River built?

It was built in 2024, making it 1 years old in 2025.

What condition is Csah 61 over Prairie 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 October 2024.

How much traffic does Csah 61 over Prairie River carry?

About 1,020 vehicles per day (2024 count).

How long is Csah 61 over Prairie River?

The structure is 144 ft (44 m) long with a longest span of 55 ft (16.8 m) and a deck 50 ft wide.

Who owns Csah 61 over Prairie River?

It is owned by the County Highway Agency.