US Bridges

Csah 11 over Cannon River

Fair

Rice County, Minnesota · 0.5 MI W of JCT TH 21 · Structure no. 66506

Built
1965
60 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
247 ft
3 main spans
Daily traffic
5,800
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 11 over Cannon River is a steel continuous stringer/multi-beam or girder carrying Csah 11 over Cannon River in Rice County, Minnesota. It was built in 1965, so it is 60 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 6 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 5,800 vehicles a day, projected to reach 5,800 by 2039. The structure is 247 ft (75.3 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCsah 11
CrossesCannon River
Location0.5 MI W of JCT TH 21
RouteCounty Highway 11
CountyRice County
StateMinnesota
Coordinates44.29766, -93.30156
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.5 US tons
Inventory rating29.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length247 ft (75.3 m)
Longest span92 ft (28 m)
Deck width42 ft (12.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2016)
Projected traffic5,800 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 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$717 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 11 over Cannon River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Csah 11 over Cannon River 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 April 2023.

How much traffic does Csah 11 over Cannon River carry?

About 5,800 vehicles per day (2016 count).

How long is Csah 11 over Cannon River?

The structure is 247 ft (75.3 m) long with a longest span of 92 ft (28 m) and a deck 42 ft wide.

Who owns Csah 11 over Cannon River?

It is owned by the County Highway Agency.