US Bridges

CR 78 over Bear River

Good

Koochiching County, Minnesota · 1.0 MI W of JCT CR 14 · Structure no. 36J03

Built
1999
26 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
28
2021 count
Owner
County
County Highway Agency

About this bridge

CR 78 over Bear River is a concrete culvert carrying CR 78 over Bear River in Koochiching County, Minnesota. It was built in 1999, so it is 26 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 28 vehicles a day, projected to reach 15 by 2041. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCR 78
CrossesBear River
Location1.0 MI W of JCT CR 14
RouteCounty Highway 78
Coordinates48.38925, -93.70292
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length30 ft (9.1 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (2021)
Projected traffic15 by 2041
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 78 over Bear River built?

It was built in 1999, making it 26 years old in 2025.

What condition is CR 78 over Bear 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 2023.

How much traffic does CR 78 over Bear River carry?

About 28 vehicles per day (2021 count).

How long is CR 78 over Bear River?

The structure is 30 ft (9.1 m) long with a longest span of 12 ft (3.7 m).

Who owns CR 78 over Bear River?

It is owned by the County Highway Agency.