US Bridges

Csah 1 over Trout Brook

Fair

Wabasha County, Minnesota · 0.1 MI S of JCT CR83 · Structure no. 79506

Built
1972
53 years old, rebuilt 2015
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
144 ft
3 main spans
Daily traffic
710
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Trout Brook is a steel continuous stringer/multi-beam or girder carrying Csah 1 over Trout Brook in Wabasha County, Minnesota. It was built in 1972 and reconstructed in 2015, so it is 53 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.

It carries about 710 vehicles a day, projected to reach 760 by 2038. The structure is 144 ft (44 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesTrout Brook
Location0.1 MI S of JCT CR83
RouteCounty Highway 1
CountyWabasha County
StateMinnesota
Coordinates44.30247, -92.54352
Functional classRural Major 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.3 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length144 ft (44 m)
Longest span55 ft (16.8 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic710 (2018)
Projected traffic760 by 2038
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 1 over Trout Brook built?

It was built in 1972, making it 53 years old in 2025. It was reconstructed in 2015.

What condition is Csah 1 over Trout Brook 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 1 over Trout Brook carry?

About 710 vehicles per day (2018 count).

How long is Csah 1 over Trout Brook?

The structure is 144 ft (44 m) long with a longest span of 55 ft (16.8 m) and a deck 36 ft wide.

Who owns Csah 1 over Trout Brook?

It is owned by the County Highway Agency.