US Bridges

W Karen Lake RD over E Br Ausable River

Good

Crawford County, Michigan · 0.1 MI E of Bobcat Trail · Structure no. 000000000013742

Built
2016
9 years old
Condition
Good
inspected October 2024
Type
Slab
Wood or Timber
Length
32 ft
1 main span
Daily traffic
50
2013 count
Owner
County
County Highway Agency

About this bridge

W Karen Lake RD over E Br Ausable River is a wood or timber slab carrying W Karen Lake RD over E Br Ausable River in Crawford County, Michigan. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2033. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesW Karen Lake RD
CrossesE Br Ausable River
Location0.1 MI E of Bobcat Trail
RouteState Lands Road 0
Coordinates44.72819, -84.64408
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.8 US tons
Inventory rating60 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadGreater than HL 93
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2013)
Projected traffic75 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 W Karen Lake RD over E Br Ausable River built?

It was built in 2016, making it 9 years old in 2025.

What condition is W Karen Lake RD over E Br Ausable River 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 October 2024.

How much traffic does W Karen Lake RD over E Br Ausable River carry?

About 50 vehicles per day (2013 count).

How long is W Karen Lake RD over E Br Ausable River?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns W Karen Lake RD over E Br Ausable River?

It is owned by the County Highway Agency.