I-20
I-20 in 6.2 MI SE Of Austell, Cobb County, Georgia received a condition grade of B (71/100). Built in 1963, the bridge carries 153K vehicles daily on I-20 over Chattahoochee River.
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-20 is a 63-year-old bridge located 6.2 MI SE Of Austell in Cobb County, Georgia. The bridge carries I-20 over Chattahoochee River with 8 traffic lanes, handling approximately 153K vehicles per day. Built in 1963 and reconstructed in 1979, the structure spans 137.8 meters.
The bridge received a Condition Grade of B (71/100) 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
I-20 has a Condition Score of 71/100 (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.
I-20 was built in 1963 and reconstructed in 1979, making it 63 years old. The average bridge age in the United States is 48 years.
I-20 carries approximately 153K vehicles per day (average daily traffic). The bridge has 8 traffic lanes. It is 137.8 meters long and located on I-20 in 6.2 MI SE Of Austell, Cobb County, Georgia.
No, I-20 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-20 is located 6.2 MI SE Of Austell in Cobb County, Georgia. The bridge carries I-20 over Chattahoochee River. Its coordinates are 33.769742, -84.539383. It is maintained by State Highway Agency.
I-20 carries I-20 over Chattahoochee River. The bridge is 137.8 meters long and was built in 1963, with reconstruction in 1979.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.