US Bridges

Steckert Bridge RD over South Branch Au Sable

Fair

Crawford County, Michigan · 10 MI SE of Grayling · Structure no. 000000000002078

Built
1979
46 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
56 ft
3 main spans
Daily traffic
150
1981 count
Owner
County
County Highway Agency

About this bridge

Steckert Bridge RD over South Branch Au Sable is a wood or timber slab carrying Steckert Bridge RD over South Branch Au Sable in Crawford County, Michigan. It was built in 1979, so it is 46 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 150 vehicles a day, projected to reach 200 by 2010. The structure is 56 ft (17 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesSteckert Bridge RD
CrossesSouth Branch Au Sable
Location10 MI SE of Grayling
RouteCounty Highway 0
CountyCrawford County
StateMichigan
Coordinates44.53226, -84.58929
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length56 ft (17 m)
Longest span32 ft (9.7 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1981)
Projected traffic200 by 2010
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$22,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Steckert Bridge RD over South Branch Au Sable built?

It was built in 1979, making it 46 years old in 2025.

What condition is Steckert Bridge RD over South Branch 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 Steckert Bridge RD over South Branch Au Sable carry?

About 150 vehicles per day (1981 count).

How long is Steckert Bridge RD over South Branch Au Sable?

The structure is 56 ft (17 m) long with a longest span of 32 ft (9.7 m) and a deck 32 ft wide.

Who owns Steckert Bridge RD over South Branch Au Sable?

It is owned by the County Highway Agency.