I-285
I-285 in 9.5 MI S Of Decatur, DeKalb County, Georgia received a condition grade of B (73/100). Built in 1966, the bridge carries 152K vehicles daily on I-285 over South River.
I-285 carries a B on the BridgeSafety Condition Score with 73/100. 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 1966 and is now 60 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-285 carries an average daily traffic count of 152,000 vehicles, with 10 lane(s) crossing South River. 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-285 is a 60-year-old bridge located 9.5 MI S Of Decatur in DeKalb County, Georgia. The bridge carries I-285 over South River with 10 traffic lanes, handling approximately 152K vehicles per day. Built in 1966 and reconstructed in 1984, the structure spans 59.4 meters.
The bridge received a Condition Grade of B (73/100) 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-285 has a Condition Score of 73/100 (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-285 was built in 1966 and reconstructed in 1984, making it 60 years old. The average bridge age in the United States is 48 years.
I-285 carries approximately 152K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 59.4 meters long and located on I-285 in 9.5 MI S Of Decatur, DeKalb County, Georgia.
No, I-285 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-285 is located 9.5 MI S Of Decatur in DeKalb County, Georgia. The bridge carries I-285 over South River. Its coordinates are 33.680314, -84.314942. It is maintained by State Highway Agency.
I-285 carries I-285 over South River. The bridge is 59.4 meters long and was built in 1966, with reconstruction in 1984.
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.