US Bridges

Camp Ten Road over Au Sable River

PoorPosted for load

Oscoda County, Michigan · Sec. 3 Big Creek Twp · Structure no. 000000000008665

Built
1976
49 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
200 ft
3 main spans
Daily traffic
730
2005 count
Owner
County
County Highway Agency

About this bridge

Camp Ten Road over Au Sable River is a prestressed concrete box beam or girders - multiple carrying Camp Ten Road over Au Sable River in Oscoda County, Michigan. It was built in 1976, so it is 49 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 730 vehicles a day, roughly 3% of them trucks, projected to reach 1,300 by 2025. The structure is 200 ft (60.9 m) long and 30 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesCamp Ten Road
CrossesAu Sable River
LocationSec. 3 Big Creek Twp
RouteCounty Highway 6833
Coordinates44.66884, -84.1784
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length200 ft (60.9 m)
Longest span66 ft (20.1 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic730 (2005)
Projected traffic1,300 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.8 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Camp Ten Road over Au Sable River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Camp Ten Road over Au Sable River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Camp Ten Road over Au Sable River carry?

About 730 vehicles per day (2005 count), of which roughly 3% are trucks.

How long is Camp Ten Road over Au Sable River?

The structure is 200 ft (60.9 m) long with a longest span of 66 ft (20.1 m) and a deck 30 ft wide.

Who owns Camp Ten Road over Au Sable River?

It is owned by the County Highway Agency.