I-75 - I-575
I-75 - I-575 in 3.7 MI SE Of Kennesaw, Cobb County, Georgia received a condition grade of F (0/100). Built in 1973, the bridge carries 227K vehicles daily on I-75 - I-575 over Noonday Creek Trib.. It is classified as structurally deficient.
I-75 - I-575 carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
The bridge was built in 1973 and is now 53 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 - I-575 carries an average daily traffic count of 227,000 vehicles, with 10 lane(s) crossing Noonday Creek Trib.. 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 - I-575 is a 53-year-old bridge located 3.7 MI SE Of Kennesaw in Cobb County, Georgia. The bridge carries I-75 - I-575 over Noonday Creek Trib. with 10 traffic lanes, handling approximately 227K vehicles per day. Built in 1973 and reconstructed in 1980, the structure spans 7.3 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-75 - I-575 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
I-75 - I-575 was built in 1973 and reconstructed in 1980, making it 53 years old. The average bridge age in the United States is 48 years.
I-75 - I-575 carries approximately 227K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 7.3 meters long and located on I-75 - I-575 in 3.7 MI SE Of Kennesaw, Cobb County, Georgia.
Yes, I-75 - I-575 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
I-75 - I-575 is located 3.7 MI SE Of Kennesaw in Cobb County, Georgia. The bridge carries I-75 - I-575 over Noonday Creek Trib.. Its coordinates are 33.996553, -84.559517. It is maintained by State Highway Agency.
I-75 - I-575 carries I-75 - I-575 over Noonday Creek Trib.. The bridge is 7.3 meters long and was built in 1973, with reconstruction in 1980.
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.