US Bridges

Piquette over I-75

Poor

Wayne County, Michigan · In Detroit · Structure no. 000000000011841

Built
1966
59 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
217 ft
4 main spans
Daily traffic
1,662
2010 count
Owner
State
State Highway Agency

About this bridge

Piquette over I-75 is a steel stringer/multi-beam or girder carrying Piquette over I-75 in Wayne County, Michigan. It was built in 1966, so it is 59 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,662 vehicles a day, roughly 3% of them trucks, projected to reach 1,828 by 2025. The structure is 217 ft (66 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPiquette
CrossesI-75
LocationIn Detroit
RouteCity Street 0
CountyWayne County
StateMichigan
Coordinates42.37079, -83.05877
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable 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 spans4
Design loadHS 20
Structure length217 ft (66 m)
Longest span76 ft (23.1 m)
Deck width68 ft (20.7 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,662 (2010)
Projected traffic1,828 by 2025
Trucks3%
Lanes on structure2
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Piquette over I-75 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Piquette over I-75 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does Piquette over I-75 carry?

About 1,662 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is Piquette over I-75?

The structure is 217 ft (66 m) long with a longest span of 76 ft (23.1 m) and a deck 68 ft wide.

Who owns Piquette over I-75?

It is owned by the State Highway Agency.