I-20
I-20 in 1.1 MI S Of Lithonia, DeKalb County, Georgia received a condition grade of A (81/100). Built in 2006, the bridge carries 141K vehicles daily on I-20 over M-9340 Klondike.
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 2006 and is 20 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 9 lane(s) crossing M-9340 Klondike. 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 20-year-old bridge located 1.1 MI S Of Lithonia in DeKalb County, Georgia. The bridge carries I-20 over M-9340 Klondike with 9 traffic lanes, handling approximately 141K vehicles per day. Built in 2006, the structure spans 33.2 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 2006, making it 20 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 9 traffic lanes. It is 33.2 meters long and located on I-20 in 1.1 MI S Of 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 1.1 MI S Of Lithonia in DeKalb County, Georgia. The bridge carries I-20 over M-9340 Klondike. Its coordinates are 33.701442, -84.108367. It is maintained by State Highway Agency.
I-20 carries I-20 over M-9340 Klondike. The bridge is 33.2 meters long and was built in 2006.
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.