US Bridges

CR 80 over Mayhew Creek

Fair

Benton County, Minnesota · 0.2 MI N of JCT Csah 8 · Structure no. L0041

Built
1938
87 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
660
2019 count
Owner
County
County Highway Agency

About this bridge

CR 80 over Mayhew Creek is a concrete culvert carrying CR 80 over Mayhew Creek in Benton County, Minnesota. It was built in 1938, so it is 87 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 5 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 660 vehicles a day, projected to reach 455 by 2039. The structure is 33 ft (10 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCR 80
CrossesMayhew Creek
Location0.2 MI N of JCT Csah 8
RouteCounty Highway 80
CountyBenton County
StateMinnesota
Coordinates45.59169, -94.09085
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10 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 traffic660 (2019)
Projected traffic455 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$75 million
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 80 over Mayhew Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is CR 80 over Mayhew 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 2023.

How much traffic does CR 80 over Mayhew Creek carry?

About 660 vehicles per day (2019 count).

How long is CR 80 over Mayhew Creek?

The structure is 33 ft (10 m) long with a longest span of 10 ft (3 m).

Who owns CR 80 over Mayhew Creek?

It is owned by the County Highway Agency.