US Bridges

CR 78 over Bunker Hill Creek

Good

Benton County, Minnesota · 0.6 MI N of JCT CR 40 · Structure no. 05J19

Built
2019
6 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
365
2011 count
Owner
County
County Highway Agency

About this bridge

CR 78 over Bunker Hill Creek is a concrete culvert carrying CR 78 over Bunker Hill Creek in Benton 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 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 365 vehicles a day, projected to reach 365 by 2031. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 78
CrossesBunker Hill Creek
Location0.6 MI N of JCT CR 40
RouteCounty Highway 78
CountyBenton County
StateMinnesota
Coordinates45.81817, -94.13507
Functional classRural Minor 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.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 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 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 length30 ft (9.1 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic365 (2011)
Projected traffic365 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 CR 78 over Bunker Hill Creek built?

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

What condition is CR 78 over Bunker Hill Creek 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 October 2022.

How much traffic does CR 78 over Bunker Hill Creek carry?

About 365 vehicles per day (2011 count).

How long is CR 78 over Bunker Hill Creek?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.3 m).

Who owns CR 78 over Bunker Hill Creek?

It is owned by the County Highway Agency.