US Bridges

Csah 1 over Unnamed Stream

Good

Rock County, Minnesota · 1.8 MI E of JCT Csah 3 · Structure no. 67K22

Built
2014
11 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
466
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Unnamed Stream is a concrete culvert carrying Csah 1 over Unnamed Stream in Rock County, Minnesota. It was built in 2014, so it is 11 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 466 vehicles a day, projected to reach 572 by 2042. The structure is 22 ft (6.6 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesUnnamed Stream
Location1.8 MI E of JCT Csah 3
RouteCounty Highway 1
CountyRock County
StateMinnesota
Coordinates43.5438, -96.06037
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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionSeptember 2021
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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length22 ft (6.6 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 traffic466 (2022)
Projected traffic572 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 1 over Unnamed Stream built?

It was built in 2014, making it 11 years old in 2025.

What condition is Csah 1 over Unnamed Stream 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 2021.

How much traffic does Csah 1 over Unnamed Stream carry?

About 466 vehicles per day (2022 count).

How long is Csah 1 over Unnamed Stream?

The structure is 22 ft (6.6 m) long with a longest span of 10 ft (3 m).

Who owns Csah 1 over Unnamed Stream?

It is owned by the County Highway Agency.