US Bridges

Driggs River Road over Diversion Ditch

Fair

Schoolcraft County, Michigan · Sec 7 T45N R14W · Structure no. 000031510-00120

Built
1940
85 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
29 ft
2 main spans
Daily traffic
30
2023 count
Owner
Federal
Bureau of Fish and Wildlife

About this bridge

Driggs River Road over Diversion Ditch is a concrete tee beam carrying Driggs River Road over Diversion Ditch in Schoolcraft County, Michigan. It was built in 1940, so it is 85 years old, older than the Michigan average of 48.3 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 30 vehicles a day, projected to reach 35 by 2043. The structure is 29 ft (8.8 m) long and 16 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesDriggs River Road
CrossesDiversion Ditch
LocationSec 7 T45N R14W
RouteFederal Lands Road 0
CountySchoolcraft County
StateMichigan
Coordinates46.31683, -86.10617
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width16 ft (4.8 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deck107 ft (32.7 m)

Traffic and service

Average daily traffic30 (2023)
Projected traffic35 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Fish and Wildlife
Maintained byBureau of Fish and Wildlife
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 Driggs River Road over Diversion Ditch built?

It was built in 1940, making it 85 years old in 2025.

What condition is Driggs River Road over Diversion Ditch 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 August 2023.

How much traffic does Driggs River Road over Diversion Ditch carry?

About 30 vehicles per day (2023 count).

How long is Driggs River Road over Diversion Ditch?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 16 ft wide.

Who owns Driggs River Road over Diversion Ditch?

It is owned by the Bureau of Fish and Wildlife.