US Bridges

9 MI RD over M-10

Fair

Oakland County, Michigan · Southfield (M-39 SB & US · Structure no. 000000000007879

Built
1964
61 years old, rebuilt 1998
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
249 ft
4 main spans
Daily traffic
16,620
1997 count
Owner
State
State Highway Agency

About this bridge

9 MI RD over M-10 is a steel stringer/multi-beam or girder carrying 9 MI RD over M-10 in Oakland County, Michigan. It was built in 1964 and reconstructed in 1998, 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 6 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 16,620 vehicles a day, roughly 3% of them trucks, projected to reach 17,540 by 2015. The structure is 249 ft (75.9 m) long and 64 ft wide.

Location

Open in Google Maps
Carries9 MI RD
CrossesM-10
LocationSouthfield (M-39 SB & US
RouteCity Street 2059
CountyOakland County
StateMichigan
Coordinates42.45883, -83.22122
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.5 US tons
Inventory rating46.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length249 ft (75.9 m)
Longest span76 ft (23.2 m)
Deck width64 ft (19.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deck14 ft (4.4 m)

Traffic and service

Average daily traffic16,620 (1997)
Projected traffic17,540 by 2015
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 9 MI RD over M-10 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1998.

What condition is 9 MI RD over M-10 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 October 2023.

How much traffic does 9 MI RD over M-10 carry?

About 16,620 vehicles per day (1997 count), of which roughly 3% are trucks.

How long is 9 MI RD over M-10?

The structure is 249 ft (75.9 m) long with a longest span of 76 ft (23.2 m) and a deck 64 ft wide.

Who owns 9 MI RD over M-10?

It is owned by the State Highway Agency.