US Bridges

I-75 SB over Joslyn RD

Fair

Oakland County, Michigan · 2.0 MI NW of M-24 (joslyn · Structure no. 000000000008014

Built
1962
63 years old, rebuilt 2008
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
214 ft
3 main spans
Daily traffic
35,763
2019 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over Joslyn RD is a steel stringer/multi-beam or girder carrying I-75 SB over Joslyn RD in Oakland County, Michigan. It was built in 1962 and reconstructed in 2008, so it is 63 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 35,763 vehicles a day, roughly 5% of them trucks, projected to reach 37,975 by 2039. The structure is 214 ft (65.2 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-75 SB
CrossesJoslyn RD
Location2.0 MI NW of M-24 (joslyn
RouteInterstate 75
CountyOakland County
StateMichigan
Coordinates42.70133, -83.28398
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length214 ft (65.2 m)
Longest span100 ft (30.5 m)
Deck width56 ft (17 m)
Roadway width52 ft (16 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,763 (2019)
Projected traffic37,975 by 2039
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-75 SB over Joslyn RD built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2008.

What condition is I-75 SB over Joslyn RD 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 March 2023.

How much traffic does I-75 SB over Joslyn RD carry?

About 35,763 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is I-75 SB over Joslyn RD?

The structure is 214 ft (65.2 m) long with a longest span of 100 ft (30.5 m) and a deck 56 ft wide.

Who owns I-75 SB over Joslyn RD?

It is owned by the State Highway Agency.