US Bridges

Csah 66 over Trout Brook

Good

Goodhue County, Minnesota · 0.1 MI E of JCT Csah 1 · Structure no. 91323

Built
1975
50 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
5,400
2020 count
Owner
County
County Highway Agency

About this bridge

Csah 66 over Trout Brook is a concrete culvert carrying Csah 66 over Trout Brook in Goodhue County, Minnesota. It was built in 1975, so it is 50 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 5,400 vehicles a day, projected to reach 7,500 by 2040. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCsah 66
CrossesTrout Brook
Location0.1 MI E of JCT Csah 1
RouteCounty Highway 66
Coordinates44.54345, -92.57336
Functional classUrban Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum 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 spans3
Design loadUnknown
Structure length33 ft (10.1 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 traffic5,400 (2020)
Projected traffic7,500 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 66 over Trout Brook built?

It was built in 1975, making it 50 years old in 2025.

What condition is Csah 66 over Trout Brook 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 November 2024.

How much traffic does Csah 66 over Trout Brook carry?

About 5,400 vehicles per day (2020 count).

How long is Csah 66 over Trout Brook?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns Csah 66 over Trout Brook?

It is owned by the County Highway Agency.