US Bridges

Ole Dam Road over Ausable River

Fair

Crawford County, Michigan · 0.5 Miles N. of M-72 · Structure no. 000000000012747

Built
1977
48 years old
Condition
Fair
inspected October 2024
Type
Orthotropic
Wood or Timber
Length
26 ft
1 main span
Daily traffic
100
1997 count
Owner
County
County Highway Agency

About this bridge

Ole Dam Road over Ausable River is a wood or timber orthotropic carrying Ole Dam Road over Ausable River in Crawford County, Michigan. It was built in 1977, so it is 48 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 100 vehicles a day, roughly 2% of them trucks, projected to reach 150 by 2017. The structure is 26 ft (7.9 m) long and 31 ft wide.

Location

Open in Google Maps
CarriesOle Dam Road
CrossesAusable River
Location0.5 Miles N. of M-72
RouteCounty Highway 0
CountyCrawford County
StateMichigan
Coordinates44.66366, -84.74047
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating60.4 US tons

Structure

Structure typeOrthotropic
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span24 ft (7.2 m)
Deck width31 ft (9.6 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1997)
Projected traffic150 by 2017
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Ole Dam Road over Ausable River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ole Dam Road over Ausable 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 Ole Dam Road over Ausable River carry?

About 100 vehicles per day (1997 count), of which roughly 2% are trucks.

How long is Ole Dam Road over Ausable River?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.2 m) and a deck 31 ft wide.

Who owns Ole Dam Road over Ausable River?

It is owned by the County Highway Agency.