M-10 NWESTERN HWY
M-10 NWESTERN HWY in In Southfield, Oakland County, Michigan received a condition grade of B (72/100). Built in 1964, the bridge carries 121K vehicles daily on M-10 NWESTERN HWY over I-696 Ramp D.
M-10 NWESTERN HWY carries a B on the BridgeSafety Condition Score with 72/100. Most component ratings are solid; one or two may show wear consistent with the structure’s age, but the bridge is not flagged as structurally deficient.
The bridge was built in 1964 and is now 62 years old, at or past the typical 50-year design life for bridges of its vintage. Maintenance and inspection cycles are correspondingly more involved than for newer structures. M-10 NWESTERN HWY carries an average daily traffic count of 121,266 vehicles, with 5 lane(s) crossing I-696 Ramp D. 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
M-10 NWESTERN HWY is a 62-year-old bridge located In Southfield in Oakland County, Michigan. The bridge carries M-10 NWESTERN HWY over I-696 Ramp D with 5 traffic lanes, handling approximately 121K vehicles per day. Built in 1964 and reconstructed in 1997, the structure spans 30.9 meters.
The bridge received a Condition Grade of B (72/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 7/9 (good), and substructure 7/9 (good).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
M-10 NWESTERN HWY has a Condition Score of 72/100 (Grade B). Its deck is rated 7/9, superstructure 7/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
M-10 NWESTERN HWY was built in 1964 and reconstructed in 1997, making it 62 years old. The average bridge age in the United States is 48 years.
M-10 NWESTERN HWY carries approximately 121K vehicles per day (average daily traffic). The bridge has 5 traffic lanes. It is 30.9 meters long and located on M-10 NWESTERN HWY in In Southfield, Oakland County, Michigan.
No, M-10 NWESTERN HWY is not classified as structurally deficient. All three primary components (deck, superstructure, and substructure) are rated above 4 on the 0-9 NBI scale.
M-10 NWESTERN HWY is located In Southfield in Oakland County, Michigan. The bridge carries M-10 NWESTERN HWY over I-696 Ramp D. Its coordinates are 42.492567, -83.287381. It is maintained by State Highway Agency.
M-10 NWESTERN HWY carries M-10 NWESTERN HWY over I-696 Ramp D. The bridge is 30.9 meters long and was built in 1964, with reconstruction in 1997.
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.