US Bridges

Csah 24 over Silver Creek

Fair

Lake County, Minnesota · 0.4 MI E of JCT Csah 2 · Structure no. 88008

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
695
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 24 over Silver Creek is a steel culvert carrying Csah 24 over Silver Creek in Lake 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 695 vehicles a day, projected to reach 360 by 2042. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 13 mi (21 km).

CarriesCsah 24
CrossesSilver Creek
Location0.4 MI E of JCT Csah 2
RouteCounty Highway 24
Coordinates47.09808, -91.65812
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 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 alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic695 (2022)
Projected traffic360 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 24 over Silver Creek built?

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

What condition is Csah 24 over Silver Creek 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 2023.

How much traffic does Csah 24 over Silver Creek carry?

About 695 vehicles per day (2022 count).

How long is Csah 24 over Silver Creek?

The structure is 24 ft (7.3 m) long with a longest span of 18 ft (5.5 m).

Who owns Csah 24 over Silver Creek?

It is owned by the County Highway Agency.