I-75 NC
I-75 NC in Approach To Brent Spence, Kenton County, Kentucky received a condition grade of C (49/100). Built in 1963, the bridge carries 132K vehicles daily on I-75 NC over 3rd-4th-5th Sts Covingto.
I-75 NC carries a C on the BridgeSafety Condition Score with 49/100. Component ratings sit in the middle of the FHWA NBI distribution; rehabilitation programming is likely on the owning agency’s medium-term horizon.
The bridge was built in 1963 and is now 63 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. I-75 NC carries an average daily traffic count of 132,112 vehicles, with 7 lane(s) crossing 3rd-4th-5th Sts Covingto. 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 NC is a 63-year-old bridge located Approach To Brent Spence in Kenton County, Kentucky. The bridge carries I-75 NC over 3rd-4th-5th Sts Covingto with 7 traffic lanes, handling approximately 132K vehicles per day. Built in 1963 and reconstructed in 2007, the structure spans 954.9 meters.
The bridge received a Condition Grade of C (49/100) based on Federal Highway Administration inspection data. Its deck is rated 5/9 (fair), superstructure 5/9 (fair), and substructure 5/9 (fair).
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-75 NC has a Condition Score of 49/100 (Grade C). Its deck is rated 5/9, superstructure 5/9, and substructure 5/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-75 NC was built in 1963 and reconstructed in 2007, making it 63 years old. The average bridge age in the United States is 48 years.
I-75 NC carries approximately 132K vehicles per day (average daily traffic). The bridge has 7 traffic lanes. It is 954.9 meters long and located on I-75 NC in Approach To Brent Spence, Kenton County, Kentucky.
No, I-75 NC 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 NC is located Approach To Brent Spence in Kenton County, Kentucky. The bridge carries I-75 NC over 3rd-4th-5th Sts Covingto. Its coordinates are 39.086817, -84.522808. It is maintained by State Highway Agency.
I-75 NC carries I-75 NC over 3rd-4th-5th Sts Covingto. The bridge is 954.9 meters long and was built in 1963, with reconstruction in 2007.
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.