US Bridges

Mont Eagle Road over Huron River

Good

Oakland County, Michigan · Southeast of Huron Bridge · Structure no. 000000000008243

Built
1989
36 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
400
1990 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mont Eagle Road over Huron River is a prestressed concrete box beam or girders - multiple carrying Mont Eagle Road over Huron River in Oakland County, Michigan. It was built in 1989, so it is 36 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 400 vehicles a day, roughly 1% of them trucks, projected to reach 800 by 2005. The structure is 38 ft (11.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMont Eagle Road
CrossesHuron River
LocationSoutheast of Huron Bridge
RouteCity Street 0
Coordinates42.58225, -83.59007
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length38 ft (11.5 m)
Longest span34 ft (10.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (1990)
Projected traffic800 by 2005
Trucks1%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mont Eagle Road over Huron River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Mont Eagle Road over Huron River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Mont Eagle Road over Huron River carry?

About 400 vehicles per day (1990 count), of which roughly 1% are trucks.

How long is Mont Eagle Road over Huron River?

The structure is 38 ft (11.5 m) long with a longest span of 34 ft (10.3 m) and a deck 25 ft wide.

Who owns Mont Eagle Road over Huron River?

It is owned by the City or Municipal Highway Agency.