US Bridges

M-39 NB over M-10

Good

Oakland County, Michigan · In Southfield · Structure no. 000000000007876

Built
1964
61 years old, rebuilt 2006
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
272 ft
4 main spans
Daily traffic
45,241
2007 count
Owner
State
State Highway Agency

About this bridge

M-39 NB over M-10 is a steel stringer/multi-beam or girder carrying M-39 NB over M-10 in Oakland County, Michigan. It was built in 1964 and reconstructed in 2006, so it is 61 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 45,241 vehicles a day, roughly 2% of them trucks, projected to reach 56,700 by 2027. The structure is 272 ft (82.9 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesM-39 NB
CrossesM-10
LocationIn Southfield
RouteState Highway 39
CountyOakland County
StateMichigan
Coordinates42.45767, -83.21941
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating56.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length272 ft (82.9 m)
Longest span93 ft (28.3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45,241 (2007)
Projected traffic56,700 by 2027
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was M-39 NB over M-10 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2006.

What condition is M-39 NB over M-10 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 June 2023.

How much traffic does M-39 NB over M-10 carry?

About 45,241 vehicles per day (2007 count), of which roughly 2% are trucks.

How long is M-39 NB over M-10?

The structure is 272 ft (82.9 m) long with a longest span of 93 ft (28.3 m) and a deck 47 ft wide.

Who owns M-39 NB over M-10?

It is owned by the State Highway Agency.