US Bridges

Pollak Bridge Road over Au Sable

Fair

Crawford County, Michigan · 1 MI NW Grayling · Structure no. 000000000002072

Built
1987
38 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
50
1987 count
Owner
County
County Highway Agency

About this bridge

Pollak Bridge Road over Au Sable is a steel stringer/multi-beam or girder carrying Pollak Bridge Road over Au Sable in Crawford County, Michigan. It was built in 1987, so it is 38 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 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 50 vehicles a day, projected to reach 60 by 2010. The structure is 32 ft (9.7 m) long and 32 ft wide. If it were closed, the detour would be 124.3 mi (200 km).

Location

Open in Google Maps
CarriesPollak Bridge Road
CrossesAu Sable
Location1 MI NW Grayling
RouteCounty Highway 0
CountyCrawford County
StateMichigan
Coordinates44.68495, -84.74567
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating70 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length32 ft (9.7 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1987)
Projected traffic60 by 2010
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed124.3 mi (200 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Pollak Bridge Road over Au Sable built?

It was built in 1987, making it 38 years old in 2025.

What condition is Pollak Bridge Road over Au Sable 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 Pollak Bridge Road over Au Sable carry?

About 50 vehicles per day (1987 count).

How long is Pollak Bridge Road over Au Sable?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Pollak Bridge Road over Au Sable?

It is owned by the County Highway Agency.