US Bridges

Csah 18 over CO Ditch # 55

Good

Freeborn County, Minnesota · 0.6 MI N of JCT Csah 5 · Structure no. 24J36

Built
2004
21 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
310
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 18 over CO Ditch # 55 is a concrete culvert carrying Csah 18 over CO Ditch # 55 in Freeborn County, Minnesota. It was built in 2004, so it is 21 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 310 vehicles a day, projected to reach 310 by 2039. The structure is 29 ft (8.7 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesCsah 18
CrossesCO Ditch # 55
Location0.6 MI N of JCT Csah 5
RouteCounty Highway 18
Coordinates43.54455, -93.36862
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than 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 length29 ft (8.7 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2017)
Projected traffic310 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 18 over CO Ditch # 55 built?

It was built in 2004, making it 21 years old in 2025.

What condition is Csah 18 over CO Ditch # 55 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 December 2023.

How much traffic does Csah 18 over CO Ditch # 55 carry?

About 310 vehicles per day (2017 count).

How long is Csah 18 over CO Ditch # 55?

The structure is 29 ft (8.7 m) long with a longest span of 13 ft (3.9 m).

Who owns Csah 18 over CO Ditch # 55?

It is owned by the County Highway Agency.