US Bridges

Csah 5 over Boy River

Good

Cass County, Minnesota · 0.3 MI E of JCT Csah 11 · Structure no. 92571

Built
1969
56 years old
Condition
Good
inspected September 2024
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
790
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 5 over Boy River is a steel culvert carrying Csah 5 over Boy River in Cass County, Minnesota. It was built in 1969, so it is 56 years old, older 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 790 vehicles a day, projected to reach 690 by 2039. The structure is 20 ft (6.2 m) long. If it were closed, the detour would be 19.9 mi (32 km).

CarriesCsah 5
CrossesBoy River
Location0.3 MI E of JCT Csah 11
RouteCounty Highway 5
Coordinates46.94169, -94.33127
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating23.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic790 (2019)
Projected traffic690 by 2039
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 5 over Boy River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 5 over Boy River 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 September 2024.

How much traffic does Csah 5 over Boy River carry?

About 790 vehicles per day (2019 count).

How long is Csah 5 over Boy River?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m).

Who owns Csah 5 over Boy River?

It is owned by the County Highway Agency.