US Bridges

Csah 1 over Rice Creek

Fair

Blue Earth County, Minnesota · 0.9 MI N of S CO Line · Structure no. 90504

Built
1940
85 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
45 ft
4 main spans
Daily traffic
152
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Rice Creek is a concrete culvert carrying Csah 1 over Rice 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 152 vehicles a day, projected to reach 160 by 2041. The structure is 45 ft (13.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesRice Creek
Location0.9 MI N of S CO Line
RouteCounty Highway 1
CountyBlue Earth County
StateMinnesota
Coordinates43.86073, -94.05833
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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 alignment8: Equal to present desirable criteria
Operating rating38.1 US tons
Inventory rating29.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length45 ft (13.8 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 traffic152 (2021)
Projected traffic160 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$85 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 1 over Rice Creek built?

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

What condition is Csah 1 over Rice Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does Csah 1 over Rice Creek carry?

About 152 vehicles per day (2021 count).

How long is Csah 1 over Rice Creek?

The structure is 45 ft (13.8 m) long with a longest span of 10 ft (3 m).

Who owns Csah 1 over Rice Creek?

It is owned by the County Highway Agency.