I-75
I-75 in In South East Marietta, Cobb County, Georgia received a condition grade of F (0/100). Built in 1965, the bridge carries 263K vehicles daily on I-75 over Rottenwood Creek. It is classified as structurally deficient.
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 is a 61-year-old bridge located In South East Marietta in Cobb County, Georgia. The bridge carries I-75 over Rottenwood Creek with 13 traffic lanes, handling approximately 263K vehicles per day. Built in 1965 and reconstructed in 1989, the structure spans 18.6 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 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 was built in 1965 and reconstructed in 1989, making it 61 years old. The average bridge age in the United States is 48 years.
I-75 carries approximately 263K vehicles per day (average daily traffic). The bridge has 13 traffic lanes. It is 18.6 meters long and located on I-75 in In South East Marietta, Cobb County, Georgia.
Yes, I-75 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 is located In South East Marietta in Cobb County, Georgia. The bridge carries I-75 over Rottenwood Creek. Its coordinates are 33.928742, -84.488578. It is maintained by State Highway Agency.
I-75 carries I-75 over Rottenwood Creek. The bridge is 18.6 meters long and was built in 1965, with reconstruction in 1989.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.