US Bridges

M-59 over Clinton River

Good

Oakland County, Michigan · 4.0 MI W of Pontiac · Structure no. 000000000007816

Built
1965
60 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
37,281
2007 count
Owner
State
State Highway Agency

About this bridge

M-59 over Clinton River is a prestressed concrete stringer/multi-beam or girder carrying M-59 over Clinton River in Oakland County, Michigan. It was built in 1965, so it is 60 years old, older 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 37,281 vehicles a day, roughly 4% of them trucks, projected to reach 43,399 by 2018. The structure is 39 ft (11.9 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesM-59
CrossesClinton River
Location4.0 MI W of Pontiac
RouteState Highway 59
Coordinates42.66031, -83.39022
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48.9 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length39 ft (11.9 m)
Longest span38 ft (11.5 m)
Deck width71 ft (21.7 m)
Roadway width63 ft (19.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,281 (2007)
Projected traffic43,399 by 2018
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-59 over Clinton River built?

It was built in 1965, making it 60 years old in 2025.

What condition is M-59 over Clinton 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 May 2023.

How much traffic does M-59 over Clinton River carry?

About 37,281 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is M-59 over Clinton River?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.5 m) and a deck 71 ft wide.

Who owns M-59 over Clinton River?

It is owned by the State Highway Agency.