US Bridges

Csah 8 over S Fk Roseau River

Fair

Roseau County, Minnesota · 0.6 MI W of JCT TH 89 · Structure no. 68519

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Channel Beam
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
150
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over S Fk Roseau River is a prestressed concrete channel beam carrying Csah 8 over S Fk Roseau River in Roseau County, Minnesota. It was built in 1970, so it is 55 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 5 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 150 vehicles a day, projected to reach 150 by 2039. The structure is 75 ft (23 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 8
CrossesS Fk Roseau River
Location0.6 MI W of JCT TH 89
RouteCounty Highway 8
CountyRoseau County
StateMinnesota
Coordinates48.62711, -95.74882
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.2 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length75 ft (23 m)
Longest span24 ft (7.3 m)
Deck width35 ft (10.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2016)
Projected traffic150 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 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 8 over S Fk Roseau River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Csah 8 over S Fk Roseau River 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 8 over S Fk Roseau River carry?

About 150 vehicles per day (2016 count).

How long is Csah 8 over S Fk Roseau River?

The structure is 75 ft (23 m) long with a longest span of 24 ft (7.3 m) and a deck 35 ft wide.

Who owns Csah 8 over S Fk Roseau River?

It is owned by the County Highway Agency.