US Bridges

Huron RD over Huron River

Fair

Oakland County, Michigan · East of Milford RD · Structure no. 000000000008242

Built
1977
48 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
85 ft
3 main spans
Daily traffic
8,545
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

Huron RD over Huron River is a prestressed concrete box beam or girders - multiple carrying Huron RD over Huron River in Oakland County, Michigan. It was built in 1977, so it is 48 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 8,545 vehicles a day, roughly 5% of them trucks, projected to reach 9,000 by 2034. The structure is 85 ft (25.9 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHuron RD
CrossesHuron River
LocationEast of Milford RD
RouteCity Street 0
CountyOakland County
StateMichigan
Coordinates42.58558, -83.59674
Functional classUrban 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 protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length85 ft (25.9 m)
Longest span35 ft (10.6 m)
Deck width43 ft (13.2 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,545 (2014)
Projected traffic9,000 by 2034
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Huron RD over Huron River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Huron RD 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 October 2023.

How much traffic does Huron RD over Huron River carry?

About 8,545 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Huron RD over Huron River?

The structure is 85 ft (25.9 m) long with a longest span of 35 ft (10.6 m) and a deck 43 ft wide.

Who owns Huron RD over Huron River?

It is owned by the City or Municipal Highway Agency.