US Bridges

Csah 7 over N Br Zumbro River

Fair

Wabasha County, Minnesota · 2.0 MI SE of JCT TH60 · Structure no. 79508

Built
1972
53 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
239 ft
3 main spans
Daily traffic
550
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 7 over N Br Zumbro River is a steel continuous stringer/multi-beam or girder carrying Csah 7 over N Br Zumbro River in Wabasha County, Minnesota. It was built in 1972, 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 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 550 vehicles a day, projected to reach 550 by 2038. The structure is 239 ft (72.8 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCsah 7
CrossesN Br Zumbro River
Location2.0 MI SE of JCT TH60
RouteCounty Highway 7
CountyWabasha County
StateMinnesota
Coordinates44.25759, -92.49136
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
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 rating69.7 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length239 ft (72.8 m)
Longest span90 ft (27.4 m)
Deck width40 ft (12.3 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2018)
Projected traffic550 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 N Br Zumbro River built?

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

What condition is Csah 7 over N Br Zumbro 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 November 2024.

How much traffic does Csah 7 over N Br Zumbro River carry?

About 550 vehicles per day (2018 count).

How long is Csah 7 over N Br Zumbro River?

The structure is 239 ft (72.8 m) long with a longest span of 90 ft (27.4 m) and a deck 40 ft wide.

Who owns Csah 7 over N Br Zumbro River?

It is owned by the County Highway Agency.