US Bridges

M-10 SB Nwestern over I-696

Fair

Oakland County, Michigan · In Southfield (I-696) · Structure no. 000000000007908

Built
1964
61 years old, rebuilt 1988
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
297 ft
2 main spans
Daily traffic
98,076
2007 count
Owner
State
State Highway Agency

About this bridge

M-10 SB Nwestern over I-696 is a steel stringer/multi-beam or girder carrying M-10 SB Nwestern over I-696 in Oakland County, Michigan. It was built in 1964 and reconstructed in 1988, 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 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 98,076 vehicles a day, roughly 1% of them trucks, projected to reach 62,744 by 2018. The structure is 297 ft (90.4 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesM-10 SB Nwestern
CrossesI-696
LocationIn Southfield (I-696)
RouteState Highway 10
CountyOakland County
StateMichigan
Coordinates42.49436, -83.29531
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.1 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length297 ft (90.4 m)
Longest span164 ft (50 m)
Deck width63 ft (19.3 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,076 (2007)
Projected traffic62,744 by 2018
Trucks1%
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-10 SB Nwestern over I-696 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1988.

What condition is M-10 SB Nwestern over I-696 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 May 2023.

How much traffic does M-10 SB Nwestern over I-696 carry?

About 98,076 vehicles per day (2007 count), of which roughly 1% are trucks.

How long is M-10 SB Nwestern over I-696?

The structure is 297 ft (90.4 m) long with a longest span of 164 ft (50 m) and a deck 63 ft wide.

Who owns M-10 SB Nwestern over I-696?

It is owned by the State Highway Agency.