US Bridges

Csah 24 over Little Fork River

Good

St. Louis County, Minnesota · 0.3 MI S of JCT Csah 115 · Structure no. 91536

Built
1978
47 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
79 ft
5 main spans
Daily traffic
2,800
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 24 over Little Fork River is a concrete culvert carrying Csah 24 over Little Fork River in St. Louis County, Minnesota. It was built in 1978, so it is 47 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,800 vehicles a day, projected to reach 2,950 by 2039. The structure is 79 ft (24 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCsah 24
CrossesLittle Fork River
Location0.3 MI S of JCT Csah 115
RouteCounty Highway 24
Coordinates47.85575, -92.68552
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length79 ft (24 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2019)
Projected traffic2,950 by 2039
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 24 over Little Fork River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Csah 24 over Little Fork River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Csah 24 over Little Fork River carry?

About 2,800 vehicles per day (2019 count).

How long is Csah 24 over Little Fork River?

The structure is 79 ft (24 m) long with a longest span of 12 ft (3.7 m).

Who owns Csah 24 over Little Fork River?

It is owned by the County Highway Agency.