US Bridges

Hoppe Road over Wiscoggin Dairn

Good

Tuscola County, Michigan · Sec 12-13 Akron Twp · Structure no. 000000000010541

Built
1986
39 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Prestressed Concrete
Length
48 ft
2 main spans
Daily traffic
115
2009 count
Owner
County
County Highway Agency

About this bridge

Hoppe Road over Wiscoggin Dairn is a prestressed concrete tee beam carrying Hoppe Road over Wiscoggin Dairn in Tuscola County, Michigan. It was built in 1986, so it is 39 years old, younger than the Michigan average of 48.3 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 115 vehicles a day, projected to reach 205 by 2029. The structure is 48 ft (14.6 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHoppe Road
CrossesWiscoggin Dairn
LocationSec 12-13 Akron Twp
RouteCounty Highway 0
CountyTuscola County
StateMichigan
Coordinates43.62473, -83.46978
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.3 US tons
Inventory rating43.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span22 ft (6.7 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115 (2009)
Projected traffic205 by 2029
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Hoppe Road over Wiscoggin Dairn built?

It was built in 1986, making it 39 years old in 2025.

What condition is Hoppe Road over Wiscoggin Dairn 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 April 2024.

How much traffic does Hoppe Road over Wiscoggin Dairn carry?

About 115 vehicles per day (2009 count).

How long is Hoppe Road over Wiscoggin Dairn?

The structure is 48 ft (14.6 m) long with a longest span of 22 ft (6.7 m) and a deck 32 ft wide.

Who owns Hoppe Road over Wiscoggin Dairn?

It is owned by the County Highway Agency.