I-285
I-285 in 3.3 MI S Of Chamblee, DeKalb County, Georgia received a condition grade of B (77/100). Built in 1968, the bridge carries 200K vehicles daily on I-285 over M-9276 Henderson Mill RD.
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 58-year-old bridge located 3.3 MI S Of Chamblee in DeKalb County, Georgia. The bridge carries I-285 over M-9276 Henderson Mill RD with 10 traffic lanes, handling approximately 200K vehicles per day. Built in 1968 and reconstructed in 1980, the structure spans 48.8 meters.
The bridge received a Condition Grade of B (77/100) based on Federal Highway Administration inspection data. Its deck is rated 7/9 (good), superstructure 8/9 (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 77/100 (Grade B). Its deck is rated 7/9, superstructure 8/9, and substructure 7/9 on the NBI scale. The bridge is not classified as structurally deficient.
I-285 was built in 1968 and reconstructed in 1980, making it 58 years old. The average bridge age in the United States is 48 years.
I-285 carries approximately 200K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 48.8 meters long and located on I-285 in 3.3 MI S Of Chamblee, 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 3.3 MI S Of Chamblee in DeKalb County, Georgia. The bridge carries I-285 over M-9276 Henderson Mill RD. Its coordinates are 33.878617, -84.249733. It is maintained by State Highway Agency.
I-285 carries I-285 over M-9276 Henderson Mill RD. The bridge is 48.8 meters long and was built in 1968, 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.