US Bridges

Csah 3 over E Split Rock River

Good

Lake County, Minnesota · 7.2 MI SW of JCT Csah 4 · Structure no. 38J11

Built
2010
15 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
260
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over E Split Rock River is a concrete culvert carrying Csah 3 over E Split Rock River in Lake County, Minnesota. It was built in 2010, so it is 15 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 260 vehicles a day, projected to reach 260 by 2042. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 52.2 mi (84 km).

CarriesCsah 3
CrossesE Split Rock River
Location7.2 MI SW of JCT Csah 4
RouteCounty Highway 3
Coordinates47.24213, -91.45254
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 spans2
Design loadHS 25 or greater
Structure length23 ft (7.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic260 (2022)
Projected traffic260 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed52.2 mi (84 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 3 over E Split Rock River built?

It was built in 2010, making it 15 years old in 2025.

What condition is Csah 3 over E Split Rock 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 April 2023.

How much traffic does Csah 3 over E Split Rock River carry?

About 260 vehicles per day (2022 count).

How long is Csah 3 over E Split Rock River?

The structure is 23 ft (7.1 m) long with a longest span of 10 ft (3 m).

Who owns Csah 3 over E Split Rock River?

It is owned by the County Highway Agency.