US Bridges

CR 52 over Caldwell Brook

Fair

Koochiching County, Minnesota · 0.3 MI S of JCT Csah 25 · Structure no. 91725

Built
1978
47 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
50 ft
3 main spans
Daily traffic
15
2008 count
Owner
County
County Highway Agency

About this bridge

CR 52 over Caldwell Brook is a concrete culvert carrying CR 52 over Caldwell Brook in Koochiching 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 fair condition with a lowest component rating of 6 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 15 vehicles a day, projected to reach 15 by 2039. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesCR 52
CrossesCaldwell Brook
Location0.3 MI S of JCT Csah 25
RouteCounty Highway 52
CountyKoochiching County
StateMinnesota
Coordinates47.92665, -94.07015
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.2 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 traffic15 (2008)
Projected traffic15 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 CR 52 over Caldwell Brook built?

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

What condition is CR 52 over Caldwell Brook 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 September 2023.

How much traffic does CR 52 over Caldwell Brook carry?

About 15 vehicles per day (2008 count).

How long is CR 52 over Caldwell Brook?

The structure is 50 ft (15.2 m) long with a longest span of 13 ft (3.9 m).

Who owns CR 52 over Caldwell Brook?

It is owned by the County Highway Agency.