US Bridges

Squirrel RD over I-75

Good

Oakland County, Michigan · 2.7 MI SE of M-59 · Structure no. 000000000008083

Built
2017
8 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
236 ft
2 main spans
Daily traffic
3,700
2005 count
Owner
State
State Highway Agency

About this bridge

Squirrel RD over I-75 is a prestressed concrete stringer/multi-beam or girder carrying Squirrel RD over I-75 in Oakland County, Michigan. It was built in 2017, so it is 8 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,700 vehicles a day, projected to reach 4,255 by 2025. The structure is 236 ft (71.9 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSquirrel RD
CrossesI-75
Location2.7 MI SE of M-59
RouteCounty Highway 0
CountyOakland County
StateMichigan
Coordinates42.61032, -83.223
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadGreater than HL 93
Structure length236 ft (71.9 m)
Longest span129 ft (39.3 m)
Deck width43 ft (13 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2005)
Projected traffic4,255 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Squirrel RD over I-75 built?

It was built in 2017, making it 8 years old in 2025.

What condition is Squirrel RD over I-75 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does Squirrel RD over I-75 carry?

About 3,700 vehicles per day (2005 count).

How long is Squirrel RD over I-75?

The structure is 236 ft (71.9 m) long with a longest span of 129 ft (39.3 m) and a deck 43 ft wide.

Who owns Squirrel RD over I-75?

It is owned by the State Highway Agency.