US Bridges

M-150 over M-59

Fair

Oakland County, Michigan · @ M-150 · Structure no. 000000000007846

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
326 ft
4 main spans
Daily traffic
35,094
2007 count
Owner
State
State Highway Agency

About this bridge

M-150 over M-59 is a steel stringer/multi-beam or girder carrying M-150 over M-59 in Oakland County, Michigan. It was built in 1970, so it is 55 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 35,094 vehicles a day, roughly 10% of them trucks, projected to reach 26,104 by 2018. The structure is 326 ft (99.4 m) long and 84 ft wide.

Location

Open in Google Maps
CarriesM-150
CrossesM-59
Location@ M-150
RouteState Highway 150
CountyOakland County
StateMichigan
Coordinates42.62826, -83.13133
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length326 ft (99.4 m)
Longest span102 ft (31.1 m)
Deck width84 ft (25.7 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,094 (2007)
Projected traffic26,104 by 2018
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedDeck replacement with only incidental widening
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-150 over M-59 built?

It was built in 1970, making it 55 years old in 2025.

What condition is M-150 over M-59 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 August 2024.

How much traffic does M-150 over M-59 carry?

About 35,094 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is M-150 over M-59?

The structure is 326 ft (99.4 m) long with a longest span of 102 ft (31.1 m) and a deck 84 ft wide.

Who owns M-150 over M-59?

It is owned by the State Highway Agency.