US Bridges

Csah 5 over Prairie Brook

Good

Mille Lacs County, Minnesota · 1.1 MI N of JCT TH 95 · Structure no. 48J41

Built
2019
6 years old
Condition
Good
inspected July 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
495
2020 count
Owner
County
County Highway Agency

About this bridge

Csah 5 over Prairie Brook is a concrete culvert carrying Csah 5 over Prairie Brook in Mille Lacs County, Minnesota. It was built in 2019, so it is 6 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 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 495 vehicles a day, projected to reach 375 by 2040. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 5
CrossesPrairie Brook
Location1.1 MI N of JCT TH 95
RouteCounty Highway 5
CountyMille Lacs County
StateMinnesota
Coordinates45.60091, -93.65552
Functional classRural Local

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length23 ft (7.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic495 (2020)
Projected traffic375 by 2040
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 5 over Prairie Brook built?

It was built in 2019, making it 6 years old in 2025.

What condition is Csah 5 over Prairie 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 July 2023.

How much traffic does Csah 5 over Prairie Brook carry?

About 495 vehicles per day (2020 count).

How long is Csah 5 over Prairie Brook?

The structure is 23 ft (7.1 m) long with a longest span of 10 ft (3 m).

Who owns Csah 5 over Prairie Brook?

It is owned by the County Highway Agency.