I-75 ACCESS RAMPS
I-75 ACCESS RAMPS in In Troy, Oakland County, Michigan received a condition grade of A (85/100). Built in 2019, the bridge carries 124K vehicles daily on I-75 ACCESS RAMPS over I-75.
I-75 ACCESS RAMPS carries an A on the BridgeSafety Condition Score with 85/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 2019 and is 7 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. I-75 ACCESS RAMPS carries an average daily traffic count of 123,600 vehicles, with 2 lane(s) crossing I-75. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
I-75 ACCESS RAMPS is a 7-year-old bridge located In Troy in Oakland County, Michigan. The bridge carries I-75 ACCESS RAMPS over I-75 with 2 traffic lanes, handling approximately 124K vehicles per day. Built in 2019, the structure spans 63.1 meters.
The bridge received a Condition Grade of A (85/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 8/9 (good), and substructure 8/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-75 ACCESS RAMPS has a Condition Score of 85/100 (Grade A). Its deck is rated 7/9, superstructure 8/9, and substructure 8/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-75 ACCESS RAMPS was built in 2019, making it 7 years old. The average bridge age in the United States is 48 years.
I-75 ACCESS RAMPS carries approximately 124K vehicles per day (average daily traffic). The bridge has 2 traffic lanes. It is 63.1 meters long and located on I-75 ACCESS RAMPS in In Troy, Oakland County, Michigan.
No, I-75 ACCESS RAMPS is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
I-75 ACCESS RAMPS is located In Troy in Oakland County, Michigan. The bridge carries I-75 ACCESS RAMPS over I-75. Its coordinates are 42.599533, -83.162544. It is maintained by State Highway Agency.
I-75 ACCESS RAMPS carries I-75 ACCESS RAMPS over I-75. The bridge is 63.1 meters long and was built in 2019.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.