US Bridges

Csah 25 over Redwood River

FairPosted for load

Lyon County, Minnesota · 1.7 MI SW of JCT Csah 5 · Structure no. 42526

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Slab
Wood or Timber
Length
84 ft
3 main spans
Daily traffic
218
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 25 over Redwood River is a wood or timber slab carrying Csah 25 over Redwood River in Lyon County, Minnesota. It was built in 1975, so it is 50 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 5 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 218 vehicles a day, projected to reach 180 by 2042. The structure is 84 ft (25.6 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 25
CrossesRedwood River
Location1.7 MI SW of JCT Csah 5
RouteCounty Highway 25
CountyLyon County
StateMinnesota
Coordinates44.37591, -95.91834
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating18 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length84 ft (25.6 m)
Longest span32 ft (9.8 m)
Deck width34 ft (10.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic218 (2022)
Projected traffic180 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 25 over Redwood River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Csah 25 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 2023.

How much traffic does Csah 25 over Redwood River carry?

About 218 vehicles per day (2022 count).

How long is Csah 25 over Redwood River?

The structure is 84 ft (25.6 m) long with a longest span of 32 ft (9.8 m) and a deck 34 ft wide.

Who owns Csah 25 over Redwood River?

It is owned by the County Highway Agency.