US Bridges

Csah 11 over Redwood River

FairPosted for load

Lyon County, Minnesota · 0.5 MI S of JCT Csah 8 · Structure no. 42520

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
148 ft
6 main spans
Daily traffic
179
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 11 over Redwood River is a wood or timber slab carrying Csah 11 over Redwood River in Lyon County, Minnesota. It was built in 1971, so it is 54 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. Its operating status is: posted for load restriction.

It carries about 179 vehicles a day, projected to reach 210 by 2042. The structure is 148 ft (45.1 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCsah 11
CrossesRedwood River
Location0.5 MI S of JCT Csah 8
RouteCounty Highway 11
CountyLyon County
StateMinnesota
Coordinates44.50821, -95.61493
Functional classRural Minor 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating49.1 US tons
Inventory rating34.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadUnknown
Structure length148 ft (45.1 m)
Longest span26 ft (7.9 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic179 (2022)
Projected traffic210 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 11 over Redwood River built?

It was built in 1971, making it 54 years old in 2025.

What condition is Csah 11 over Redwood 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 October 2024.

How much traffic does Csah 11 over Redwood River carry?

About 179 vehicles per day (2022 count).

How long is Csah 11 over Redwood River?

The structure is 148 ft (45.1 m) long with a longest span of 26 ft (7.9 m) and a deck 33 ft wide.

Who owns Csah 11 over Redwood River?

It is owned by the County Highway Agency.