US Bridges

Willow Road over Sugar Creek

Fair

Washtenaw County, Michigan · Augusta Twp Sec 19 & 30 · Structure no. 000000000012850

Built
1999
26 years old
Condition
Fair
inspected June 2023
Type
Slab
Wood or Timber
Length
30 ft
1 main span
Daily traffic
2,573
2003 count
Owner
County
County Highway Agency

About this bridge

Willow Road over Sugar Creek is a wood or timber slab carrying Willow Road over Sugar Creek in Washtenaw County, Michigan. It was built in 1999, so it is 26 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 2,573 vehicles a day, roughly 5% of them trucks, projected to reach 4,647 by 2023. The structure is 30 ft (9.1 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWillow Road
CrossesSugar Creek
LocationAugusta Twp Sec 19 & 30
RouteCounty Highway 0
CountyWashtenaw County
StateMichigan
Coordinates42.11313, -83.64424
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,573 (2003)
Projected traffic4,647 by 2023
Trucks5%
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 Willow Road over Sugar Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Willow Road over Sugar Creek 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 June 2023.

How much traffic does Willow Road over Sugar Creek carry?

About 2,573 vehicles per day (2003 count), of which roughly 5% are trucks.

How long is Willow Road over Sugar Creek?

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

Who owns Willow Road over Sugar Creek?

It is owned by the County Highway Agency.