I-20
I-20 in 2.5 MI SW Lithonia, DeKalb County, Georgia received a condition grade of A (81/100). Built in 2004, the bridge carries 141K vehicles daily on I-20 over Lithonia Industrial BLVD.
I-20 carries an A on the BridgeSafety Condition Score with 81/100. Deck, superstructure, and substructure ratings all sit in the better tier of the FHWA NBI distribution. The bridge is structurally sound by federal standards.
The bridge was built in 2004 and is 22 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. I-20 carries an average daily traffic count of 141,000 vehicles, with 6 lane(s) crossing Lithonia Industrial BLVD. 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-20 is a 22-year-old bridge located 2.5 MI SW Lithonia in DeKalb County, Georgia. The bridge carries I-20 over Lithonia Industrial BLVD with 6 traffic lanes, handling approximately 141K vehicles per day. Built in 2004, the structure spans 64.9 meters.
The bridge received a Condition Grade of A (81/100) 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-20 has a Condition Score of 81/100 (Grade A). 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-20 was built in 2004, making it 22 years old. The average bridge age in the United States is 48 years.
I-20 carries approximately 141K vehicles per day (average daily traffic). The bridge has 6 traffic lanes. It is 64.9 meters long and located on I-20 in 2.5 MI SW Lithonia, DeKalb 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 2.5 MI SW Lithonia in DeKalb County, Georgia. The bridge carries I-20 over Lithonia Industrial BLVD. Its coordinates are 33.703503, -84.130814. It is maintained by State Highway Agency.
I-20 carries I-20 over Lithonia Industrial BLVD. The bridge is 64.9 meters long and was built in 2004.
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.