US Bridges

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

Good

Wayne County, Michigan · Ambassador Gateway · Structure no. 000000000013318

Built
2007
18 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
531 ft
4 main spans
Daily traffic
1,060
2010 count
Owner
State
State Highway Agency

About this bridge

Rmp to SB I-75 over I-75 and I-96 is a steel continuous stringer/multi-beam or girder carrying Rmp to SB I-75 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 1,060 vehicles a day, projected to reach 1,219 by 2030. The structure is 531 ft (161.8 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRmp to SB I-75
CrossesI-75 and I-96
LocationAmbassador Gateway
RouteInterstate 75
CountyWayne County
StateMichigan
Coordinates42.32284, -83.0827
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
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 rating66 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length531 ft (161.8 m)
Longest span154 ft (46.8 m)
Deck width50 ft (15.1 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,060 (2010)
Projected traffic1,219 by 2030
Trucks0%
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 Rmp to SB I-75 over I-75 and I-96 built?

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

What condition is Rmp to SB I-75 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 Rmp to SB I-75 over I-75 and I-96 carry?

About 1,060 vehicles per day (2010 count).

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

The structure is 531 ft (161.8 m) long with a longest span of 154 ft (46.8 m) and a deck 50 ft wide.

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

It is owned by the State Highway Agency.