US Bridges

SB I-75 Rmp to Tp over I-75 and I-96

Good

Wayne County, Michigan · Ambassador Gateway · Structure no. 000000000013312

Built
2007
18 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
433 ft
3 main spans
Daily traffic
14,204
2011 count
Owner
State
State Highway Agency

About this bridge

SB I-75 Rmp to Tp over I-75 and I-96 is a steel continuous stringer/multi-beam or girder carrying SB I-75 Rmp to Tp over I-75 and I-96 in Wayne County, Michigan. It was built in 2007, so it is 18 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 14,204 vehicles a day, roughly 13% of them trucks, projected to reach 16,334 by 2031. The structure is 433 ft (131.9 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB I-75 Rmp to Tp
CrossesI-75 and I-96
LocationAmbassador Gateway
RouteInterstate 75
Coordinates42.32035, -83.08199
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating78.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length433 ft (131.9 m)
Longest span175 ft (53.4 m)
Deck width53 ft (16.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,204 (2011)
Projected traffic16,334 by 2031
Trucks13%
Lanes on structure2
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 SB I-75 Rmp to Tp over I-75 and I-96 built?

It was built in 2007, making it 18 years old in 2025.

What condition is SB I-75 Rmp to Tp over I-75 and I-96 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 June 2024.

How much traffic does SB I-75 Rmp to Tp over I-75 and I-96 carry?

About 14,204 vehicles per day (2011 count), of which roughly 13% are trucks.

How long is SB I-75 Rmp to Tp over I-75 and I-96?

The structure is 433 ft (131.9 m) long with a longest span of 175 ft (53.4 m) and a deck 53 ft wide.

Who owns SB I-75 Rmp to Tp over I-75 and I-96?

It is owned by the State Highway Agency.