US Bridges

Csah 1 over Cannon River (overflow)

Fair

Rice County, Minnesota · 0.1 MI W of JCT Csah 20 · Structure no. 66518

Built
1978
47 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
88 ft
2 main spans
Daily traffic
3,350
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Cannon River (overflow) is a steel continuous stringer/multi-beam or girder carrying Csah 1 over Cannon River (overflow) in Rice County, Minnesota. It was built in 1978, so it is 47 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 3,350 vehicles a day, projected to reach 3,350 by 2039. The structure is 88 ft (26.7 m) long and 55 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesCannon River (overflow)
Location0.1 MI W of JCT Csah 20
RouteCounty Highway 1
CountyRice County
StateMinnesota
Coordinates44.4301, -93.20443
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating51.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length88 ft (26.7 m)
Longest span41 ft (12.5 m)
Deck width55 ft (16.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,350 (2016)
Projected traffic3,350 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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 1 over Cannon River (overflow) built?

It was built in 1978, making it 47 years old in 2025.

What condition is Csah 1 over Cannon River (overflow) 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 1 over Cannon River (overflow) carry?

About 3,350 vehicles per day (2016 count).

How long is Csah 1 over Cannon River (overflow)?

The structure is 88 ft (26.7 m) long with a longest span of 41 ft (12.5 m) and a deck 55 ft wide.

Who owns Csah 1 over Cannon River (overflow)?

It is owned by the County Highway Agency.