US Bridges

Csah 108 over Stream

Fair

St. Louis County, Minnesota · 0.1 MI N of JCT CR 334 · Structure no. 93449

Built
1979
46 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
230
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 108 over Stream is a concrete culvert carrying Csah 108 over Stream in St. Louis County, Minnesota. It was built in 1979, so it is 46 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 230 vehicles a day, projected to reach 205 by 2039. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCsah 108
CrossesStream
Location0.1 MI N of JCT CR 334
RouteCounty Highway 108
Coordinates47.42971, -92.35762
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.5 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic230 (2019)
Projected traffic205 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 108 over Stream built?

It was built in 1979, making it 46 years old in 2025.

What condition is Csah 108 over Stream 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 June 2024.

How much traffic does Csah 108 over Stream carry?

About 230 vehicles per day (2019 count).

How long is Csah 108 over Stream?

The structure is 25 ft (7.5 m) long with a longest span of 9 ft (2.6 m).

Who owns Csah 108 over Stream?

It is owned by the County Highway Agency.