US Bridges

Csah 7 over Inguadona Bay

Good

Cass County, Minnesota · 0.7 MI W of JCT CR 129 · Structure no. 11524

Built
2011
14 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
78 ft
3 main spans
Daily traffic
690
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 7 over Inguadona Bay is a concrete continuous slab carrying Csah 7 over Inguadona Bay in Cass County, Minnesota. It was built in 2011, so it is 14 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 690 vehicles a day, projected to reach 770 by 2039. The structure is 78 ft (23.8 m) long and 39 ft wide. If it were closed, the detour would be 23 mi (37 km).

CarriesCsah 7
CrossesInguadona Bay
Location0.7 MI W of JCT CR 129
RouteCounty Highway 7
Coordinates46.97953, -94.12853
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating55.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length78 ft (23.8 m)
Longest span29 ft (8.8 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic690 (2019)
Projected traffic770 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed23 mi (37 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 Inguadona Bay built?

It was built in 2011, making it 14 years old in 2025.

What condition is Csah 7 over Inguadona Bay in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Csah 7 over Inguadona Bay carry?

About 690 vehicles per day (2019 count).

How long is Csah 7 over Inguadona Bay?

The structure is 78 ft (23.8 m) long with a longest span of 29 ft (8.8 m) and a deck 39 ft wide.

Who owns Csah 7 over Inguadona Bay?

It is owned by the County Highway Agency.