US Bridges

SB Baldwin RD over I-75

Fair

Oakland County, Michigan · 3.1 MI NW of M-24 · Structure no. 000000000008025

Built
1993
32 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
230 ft
2 main spans
Daily traffic
13,188
2019 count
Owner
State
State Highway Agency

About this bridge

SB Baldwin RD over I-75 is a prestressed concrete stringer/multi-beam or girder carrying SB Baldwin RD over I-75 in Oakland County, Michigan. It was built in 1993, so it is 32 years old, younger 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 13,188 vehicles a day, roughly 3% of them trucks, projected to reach 14,000 by 2039. The structure is 230 ft (70.1 m) long and 59 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSB Baldwin RD
CrossesI-75
Location3.1 MI NW of M-24
RouteCounty Highway 2059
CountyOakland County
StateMichigan
Coordinates42.70518, -83.30705
Functional classUrban Other Principal 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span118 ft (36 m)
Deck width59 ft (18.1 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,188 (2019)
Projected traffic14,000 by 2039
Trucks3%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 SB Baldwin RD over I-75 built?

It was built in 1993, making it 32 years old in 2025.

What condition is SB Baldwin RD over I-75 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 SB Baldwin RD over I-75 carry?

About 13,188 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is SB Baldwin RD over I-75?

The structure is 230 ft (70.1 m) long with a longest span of 118 ft (36 m) and a deck 59 ft wide.

Who owns SB Baldwin RD over I-75?

It is owned by the State Highway Agency.