US Bridges

Csah 7 over Big Cottonwood River

Good

Lyon County, Minnesota · 1.2 MI S of JCT Csah 2 · Structure no. 42567

Built
2013
12 years old
Condition
Good
inspected October 2023
Type
Slab
Concrete Continuous
Length
80 ft
3 main spans
Daily traffic
758
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 7 over Big Cottonwood River is a concrete continuous slab carrying Csah 7 over Big Cottonwood River in Lyon County, Minnesota. It was built in 2013, so it is 12 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 758 vehicles a day, projected to reach 830 by 2042. The structure is 80 ft (24.5 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 7
CrossesBig Cottonwood River
Location1.2 MI S of JCT Csah 2
RouteCounty Highway 7
CountyLyon County
StateMinnesota
Coordinates44.29553, -95.81631
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.4 US tons
Inventory rating52.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length80 ft (24.5 m)
Longest span30 ft (9.1 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic758 (2022)
Projected traffic830 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 7 over Big Cottonwood River built?

It was built in 2013, making it 12 years old in 2025.

What condition is Csah 7 over Big Cottonwood River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Csah 7 over Big Cottonwood River carry?

About 758 vehicles per day (2022 count).

How long is Csah 7 over Big Cottonwood River?

The structure is 80 ft (24.5 m) long with a longest span of 30 ft (9.1 m) and a deck 39 ft wide.

Who owns Csah 7 over Big Cottonwood River?

It is owned by the County Highway Agency.