US Bridges

Csah 1 over Bogus Brook

Good

Mille Lacs County, Minnesota · 0.1 MI E of JCT Csah 12 · Structure no. 93312

Built
1978
47 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
430
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Bogus Brook is a concrete culvert carrying Csah 1 over Bogus Brook in Mille Lacs County, Minnesota. It was built in 1978, so it is 47 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 430 vehicles a day, projected to reach 395 by 2038. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesBogus Brook
Location0.1 MI E of JCT Csah 12
RouteCounty Highway 1
CountyMille Lacs County
StateMinnesota
Coordinates45.67534, -93.55341
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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.3 m)
Longest span13 ft (3.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic430 (2018)
Projected traffic395 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Bogus Brook built?

It was built in 1978, making it 47 years old in 2025.

What condition is Csah 1 over Bogus Brook 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 2021.

How much traffic does Csah 1 over Bogus Brook carry?

About 430 vehicles per day (2018 count).

How long is Csah 1 over Bogus Brook?

The structure is 31 ft (9.3 m) long with a longest span of 13 ft (3.9 m).

Who owns Csah 1 over Bogus Brook?

It is owned by the County Highway Agency.