I-20- RAMPS
I-20- RAMPS in 8 MI SE Of Decatur, DeKalb County, Georgia received a condition grade of F (0/100). Built in 1958, the bridge carries 196K vehicles daily on I-20- RAMPS over Cobb Creek. It is classified as structurally deficient.
I-20- RAMPS carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
The bridge was built in 1958 and is now 68 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-20- RAMPS carries an average daily traffic count of 196,000 vehicles, with 10 lane(s) crossing Cobb Creek. 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- RAMPS is a 68-year-old bridge located 8 MI SE Of Decatur in DeKalb County, Georgia. The bridge carries I-20- RAMPS over Cobb Creek with 10 traffic lanes, handling approximately 196K vehicles per day. Built in 1958 and reconstructed in 1966, the structure spans 13.7 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
I-20- RAMPS has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
I-20- RAMPS was built in 1958 and reconstructed in 1966, making it 68 years old. The average bridge age in the United States is 48 years.
I-20- RAMPS carries approximately 196K vehicles per day (average daily traffic). The bridge has 10 traffic lanes. It is 13.7 meters long and located on I-20- RAMPS in 8 MI SE Of Decatur, DeKalb County, Georgia.
Yes, I-20- RAMPS is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
I-20- RAMPS is located 8 MI SE Of Decatur in DeKalb County, Georgia. The bridge carries I-20- RAMPS over Cobb Creek. Its coordinates are 33.714119, -84.236800. It is maintained by State Highway Agency.
I-20- RAMPS carries I-20- RAMPS over Cobb Creek. The bridge is 13.7 meters long and was built in 1958, with reconstruction in 1966.
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.