US Bridges

Csah 25 over Perch Creek

Poor

Blue Earth County, Minnesota · 0.5 MI E of JCT CR 136 · Structure no. 90529

Built
1940
85 years old
Condition
Poor
inspected October 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
305
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 25 over Perch Creek is a concrete culvert carrying Csah 25 over Perch Creek in Blue Earth County, Minnesota. It was built in 1940, so it is 85 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 305 vehicles a day, projected to reach 175 by 2042. The structure is 34 ft (10.4 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 25
CrossesPerch Creek
Location0.5 MI E of JCT CR 136
RouteCounty Highway 25
CountyBlue Earth County
StateMinnesota
Coordinates43.9348, -94.33971
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.8 US tons
Inventory rating22 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic305 (2022)
Projected traffic175 by 2042
Trucks—
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$70 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 25 over Perch Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Csah 25 over Perch Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Csah 25 over Perch Creek carry?

About 305 vehicles per day (2022 count).

How long is Csah 25 over Perch Creek?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Csah 25 over Perch Creek?

It is owned by the County Highway Agency.