US Bridges

CR 40 over Bunker Hill Creek

Fair

Benton County, Minnesota · 0.3 MI W of JCT CR 56 · Structure no. 1288

Built
1939
86 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
60
2011 count
Owner
County
County Highway Agency

About this bridge

CR 40 over Bunker Hill Creek is a concrete culvert carrying CR 40 over Bunker Hill Creek in Benton County, Minnesota. It was built in 1939, so it is 86 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 60 vehicles a day, projected to reach 60 by 2039. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCR 40
CrossesBunker Hill Creek
Location0.3 MI W of JCT CR 56
RouteCounty Highway 40
CountyBenton County
StateMinnesota
Coordinates45.80116, -94.18282
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating40.3 US tons
Inventory rating31.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length22 ft (6.7 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 traffic60 (2011)
Projected traffic60 by 2039
Trucks—
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 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 40 over Bunker Hill Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is CR 40 over Bunker Hill Creek 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 October 2024.

How much traffic does CR 40 over Bunker Hill Creek carry?

About 60 vehicles per day (2011 count).

How long is CR 40 over Bunker Hill Creek?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns CR 40 over Bunker Hill Creek?

It is owned by the County Highway Agency.