US Bridges

Willow Road over Huron River

Fair

Wayne County, Michigan · Huron S/Huron River Dr. · Structure no. 000000000011984

Built
1922
103 years old, rebuilt 1993
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete Continuous
Length
192 ft
2 main spans
Daily traffic
7,481
1997 count
Owner
County
County Highway Agency

About this bridge

Willow Road over Huron River is a concrete continuous arch - deck carrying Willow Road over Huron River in Wayne County, Michigan. It was built in 1922 and reconstructed in 1993, so it is 103 years old, older 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 7,481 vehicles a day, roughly 5% of them trucks, projected to reach 4,000 by 2015. The structure is 192 ft (58.5 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesWillow Road
CrossesHuron River
LocationHuron S/Huron River Dr.
RouteCounty Highway 8206
CountyWayne County
StateMichigan
Coordinates42.116, -83.3571
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating64.3 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length192 ft (58.5 m)
Longest span109 ft (33.2 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,481 (1997)
Projected traffic4,000 by 2015
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Huron River built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1993.

What condition is Willow Road over Huron 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 June 2023.

How much traffic does Willow Road over Huron River carry?

About 7,481 vehicles per day (1997 count), of which roughly 5% are trucks.

How long is Willow Road over Huron River?

The structure is 192 ft (58.5 m) long with a longest span of 109 ft (33.2 m) and a deck 28 ft wide.

Who owns Willow Road over Huron River?

It is owned by the County Highway Agency.