US Bridges

Csah 8 over Nett Lake River

Fair

Koochiching County, Minnesota · 3.0 MI NE JCT Mn 65 · Structure no. 36530

Built
2007
18 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
40
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 8 over Nett Lake River is a prestressed concrete stringer/multi-beam or girder carrying Csah 8 over Nett Lake River in Koochiching County, Minnesota. It was built in 2007, so it is 18 years old, younger 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 40 vehicles a day, projected to reach 40 by 2039. The structure is 134 ft (40.8 m) long and 35 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesCsah 8
CrossesNett Lake River
Location3.0 MI NE JCT Mn 65
RouteCounty Highway 8
CountyKoochiching County
StateMinnesota
Coordinates48.21658, -93.44451
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating90.4 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length134 ft (40.8 m)
Longest span125 ft (38.2 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2016)
Projected traffic40 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 Nett Lake River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Csah 8 over Nett Lake 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 Nett Lake River carry?

About 40 vehicles per day (2016 count).

How long is Csah 8 over Nett Lake River?

The structure is 134 ft (40.8 m) long with a longest span of 125 ft (38.2 m) and a deck 35 ft wide.

Who owns Csah 8 over Nett Lake River?

It is owned by the County Highway Agency.