US Bridges

Csah 18 over CO Ditch # 41

Good

Clay County, Minnesota · 0.1 MI E of JCT Csah 3 · Structure no. 93397

Built
1978
47 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
874
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 18 over CO Ditch # 41 is a concrete culvert carrying Csah 18 over CO Ditch # 41 in Clay 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 874 vehicles a day, roughly 5% of them trucks, projected to reach 890 by 2041. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCsah 18
CrossesCO Ditch # 41
Location0.1 MI E of JCT Csah 3
RouteCounty Highway 18
Coordinates46.90497, -96.75833
Functional classUrban 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 inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic874 (2021)
Projected traffic890 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 18 over CO Ditch # 41 built?

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

What condition is Csah 18 over CO Ditch # 41 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 October 2024.

How much traffic does Csah 18 over CO Ditch # 41 carry?

About 874 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Csah 18 over CO Ditch # 41?

The structure is 30 ft (9.1 m) long with a longest span of 11 ft (3.5 m).

Who owns Csah 18 over CO Ditch # 41?

It is owned by the County Highway Agency.