US Bridges

Csah 74 over Lake of Woods

Fair

Roseau County, Minnesota · 1.2 MI E of JCT TH 313 · Structure no. 68521

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
93 ft
3 main spans
Daily traffic
472
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 74 over Lake of Woods is a prestressed concrete channel beam carrying Csah 74 over Lake of Woods in Roseau County, Minnesota. It was built in 1971, so it is 54 years old, older 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 472 vehicles a day, projected to reach 550 by 2042. The structure is 93 ft (28.4 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 74
CrossesLake of Woods
Location1.2 MI E of JCT TH 313
RouteCounty Highway 74
CountyRoseau County
StateMinnesota
Coordinates48.91265, -95.30732
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.1 US tons
Inventory rating48.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length93 ft (28.4 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.8 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic472 (2022)
Projected traffic550 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 74 over Lake of Woods built?

It was built in 1971, making it 54 years old in 2025.

What condition is Csah 74 over Lake of Woods 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 October 2024.

How much traffic does Csah 74 over Lake of Woods carry?

About 472 vehicles per day (2022 count).

How long is Csah 74 over Lake of Woods?

The structure is 93 ft (28.4 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns Csah 74 over Lake of Woods?

It is owned by the County Highway Agency.