US Bridges

Csah 7 over S Br Mid Fk Zumbro River

Fair

Dodge County, Minnesota · 0.7 MI S of JCT Csah 16 · Structure no. 20503

Built
1970
55 years old
Condition
Fair
inspected July 2023
Type
Channel Beam
Prestressed Concrete
Length
94 ft
3 main spans
Daily traffic
770
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 7 over S Br Mid Fk Zumbro River is a prestressed concrete channel beam carrying Csah 7 over S Br Mid Fk Zumbro River in Dodge County, Minnesota. It was built in 1970, so it is 55 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 770 vehicles a day, projected to reach 770 by 2039. The structure is 94 ft (28.6 m) long and 37 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 7
CrossesS Br Mid Fk Zumbro River
Location0.7 MI S of JCT Csah 16
RouteCounty Highway 7
CountyDodge County
StateMinnesota
Coordinates44.07977, -92.8491
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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 alignment8: Equal to present desirable criteria
Operating rating80.2 US tons
Inventory rating48.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length94 ft (28.6 m)
Longest span31 ft (9.5 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2017)
Projected traffic770 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 S Br Mid Fk Zumbro River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Csah 7 over S Br Mid Fk 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 July 2023.

How much traffic does Csah 7 over S Br Mid Fk Zumbro River carry?

About 770 vehicles per day (2017 count).

How long is Csah 7 over S Br Mid Fk Zumbro River?

The structure is 94 ft (28.6 m) long with a longest span of 31 ft (9.5 m) and a deck 37 ft wide.

Who owns Csah 7 over S Br Mid Fk Zumbro River?

It is owned by the County Highway Agency.