US Bridges

Csah 9 over Little Cannon River

Fair

Goodhue County, Minnesota · 0.3 MI W of JCT Csah 14 · Structure no. 25541

Built
1981
44 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
146 ft
3 main spans
Daily traffic
2,350
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 9 over Little Cannon River is a steel continuous stringer/multi-beam or girder carrying Csah 9 over Little Cannon River in Goodhue County, Minnesota. It was built in 1981, so it is 44 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 2,350 vehicles a day, projected to reach 1,750 by 2039. The structure is 146 ft (44.4 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCsah 9
CrossesLittle Cannon River
Location0.3 MI W of JCT Csah 14
RouteCounty Highway 9
CountyGoodhue County
StateMinnesota
Coordinates44.4064, -92.93078
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.4 m)
Longest span55 ft (16.8 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2019)
Projected traffic1,750 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 9 over Little Cannon River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Csah 9 over Little 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 September 2023.

How much traffic does Csah 9 over Little Cannon River carry?

About 2,350 vehicles per day (2019 count).

How long is Csah 9 over Little Cannon River?

The structure is 146 ft (44.4 m) long with a longest span of 55 ft (16.8 m) and a deck 47 ft wide.

Who owns Csah 9 over Little Cannon River?

It is owned by the County Highway Agency.