US Bridges

Cornell RD over M-39

Fair

Oakland County, Michigan · In Southfield · Structure no. 000000000007994

Built
1963
62 years old, rebuilt 2000
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
109 ft
2 main spans
Daily traffic
1,500
1984 count
Owner
State
State Highway Agency

About this bridge

Cornell RD over M-39 is a prestressed concrete stringer/multi-beam or girder carrying Cornell RD over M-39 in Oakland County, Michigan. It was built in 1963 and reconstructed in 2000, so it is 62 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 1,500 vehicles a day, roughly 3% of them trucks, projected to reach 320 by 1977. The structure is 109 ft (33.1 m) long and 59 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCornell RD
CrossesM-39
LocationIn Southfield
RouteCity Street 0
CountyOakland County
StateMichigan
Coordinates42.45129, -83.21986
Functional classUrban Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length109 ft (33.1 m)
Longest span54 ft (16.5 m)
Deck width59 ft (17.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (1984)
Projected traffic320 by 1977
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$77,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cornell RD over M-39 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2000.

What condition is Cornell RD over M-39 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 June 2023.

How much traffic does Cornell RD over M-39 carry?

About 1,500 vehicles per day (1984 count), of which roughly 3% are trucks.

How long is Cornell RD over M-39?

The structure is 109 ft (33.1 m) long with a longest span of 54 ft (16.5 m) and a deck 59 ft wide.

Who owns Cornell RD over M-39?

It is owned by the State Highway Agency.