US Bridges

Cookson Road over Manistique River

Fair

Schoolcraft County, Michigan · Sec 28 Doyle Twp · Structure no. 000000000009718

Built
1996
29 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
150 ft
3 main spans
Daily traffic
48
2013 count
Owner
State
Other State Agency

About this bridge

Cookson Road over Manistique River is a wood or timber slab carrying Cookson Road over Manistique River in Schoolcraft County, Michigan. It was built in 1996, so it is 29 years old, younger 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 48 vehicles a day, projected to reach 71 by 2033. The structure is 150 ft (45.7 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesCookson Road
CrossesManistique River
LocationSec 28 Doyle Twp
RouteState Lands Road 0
CountySchoolcraft County
StateMichigan
Coordinates46.08608, -86.05981
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 protection6 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating91.8 US tons
Inventory rating61.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span54 ft (16.5 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2013)
Projected traffic71 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State 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 Cookson Road over Manistique River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Cookson Road over Manistique River 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 Cookson Road over Manistique River carry?

About 48 vehicles per day (2013 count).

How long is Cookson Road over Manistique River?

The structure is 150 ft (45.7 m) long with a longest span of 54 ft (16.5 m) and a deck 26 ft wide.

Who owns Cookson Road over Manistique River?

It is owned by the Other State Agency.