US Bridges

Csah 61 over French River

Good

St. Louis County, Minnesota · 0.1 MI E of JCT Csah 50 · Structure no. 69A70

Built
2020
5 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
124 ft
1 main span
Daily traffic
1,300
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 61 over French River is a prestressed concrete stringer/multi-beam or girder carrying Csah 61 over French River in St. Louis County, Minnesota. It was built in 2020, so it is 5 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 1,300 vehicles a day, projected to reach 1,633 by 2040. The structure is 124 ft (37.7 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 61
CrossesFrench River
Location0.1 MI E of JCT Csah 50
RouteCounty Highway 61
Coordinates46.89963, -91.89279
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating86.8 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length124 ft (37.7 m)
Longest span120 ft (36.6 m)
Deck width55 ft (16.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2019)
Projected traffic1,633 by 2040
Trucks—
Lanes on structure3
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 French River built?

It was built in 2020, making it 5 years old in 2025.

What condition is Csah 61 over French 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 French River carry?

About 1,300 vehicles per day (2019 count).

How long is Csah 61 over French River?

The structure is 124 ft (37.7 m) long with a longest span of 120 ft (36.6 m) and a deck 55 ft wide.

Who owns Csah 61 over French River?

It is owned by the County Highway Agency.