US Bridges

Csah 32 over Perch Creek

Good

Blue Earth County, Minnesota · 0.4 MI NW of JCT Csah 10 · Structure no. 7243

Built
1960
65 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
137 ft
3 main spans
Daily traffic
145
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 32 over Perch Creek is a prestressed concrete stringer/multi-beam or girder carrying Csah 32 over Perch Creek in Blue Earth County, Minnesota. It was built in 1960, so it is 65 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 145 vehicles a day, projected to reach 145 by 2042. The structure is 137 ft (41.8 m) long and 31 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 32
CrossesPerch Creek
Location0.4 MI NW of JCT Csah 10
RouteCounty Highway 32
Coordinates43.97581, -94.28752
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating55.8 US tons
Inventory rating33.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length137 ft (41.8 m)
Longest span52 ft (15.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2022)
Projected traffic145 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$246 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 32 over Perch Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Csah 32 over Perch Creek 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 2023.

How much traffic does Csah 32 over Perch Creek carry?

About 145 vehicles per day (2022 count).

How long is Csah 32 over Perch Creek?

The structure is 137 ft (41.8 m) long with a longest span of 52 ft (15.7 m) and a deck 31 ft wide.

Who owns Csah 32 over Perch Creek?

It is owned by the County Highway Agency.