US Bridges

Huron City Road over East Br. Willow River

Fair

Huron County, Michigan · Sec. 8-17 Bloomfield Twp · Structure no. 000000000003565

Built
2004
21 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
78 ft
1 main span
Daily traffic
100
2009 count
Owner
County
County Highway Agency

About this bridge

Huron City Road over East Br. Willow River is a prestressed concrete box beam or girders - multiple carrying Huron City Road over East Br. Willow River in Huron County, Michigan. It was built in 2004, so it is 21 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 180 by 2029. The structure is 78 ft (23.7 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesHuron City Road
CrossesEast Br. Willow River
LocationSec. 8-17 Bloomfield Twp
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.91434, -82.84522
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.3 US tons
Inventory rating47.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length78 ft (23.7 m)
Longest span76 ft (23.3 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2009)
Projected traffic180 by 2029
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Huron City Road over East Br. Willow River built?

It was built in 2004, making it 21 years old in 2025.

What condition is Huron City Road over East Br. Willow 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 October 2023.

How much traffic does Huron City Road over East Br. Willow River carry?

About 100 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Huron City Road over East Br. Willow River?

The structure is 78 ft (23.7 m) long with a longest span of 76 ft (23.3 m) and a deck 31 ft wide.

Who owns Huron City Road over East Br. Willow River?

It is owned by the County Highway Agency.