The Atlanta BeltLine (also Beltline or Belt Line) is a open and planned loop of multi-use trail and light rail transit system on a former railway corridor around the core of Atlanta, Georgia. The Atlanta BeltLine is designed to reconnect neighborhoods and communities historically divided and marginalized by infrastructure, improve transportation, add green space, promote redevelopment, create and preserve affordable housing, and showcase arts and culture. The project is in varying stages of development, with several mainline and spur trails complete and others in an unpaved, but hikeable, state. Since the passage of the More MARTA sales tax in 2016, construction of the light rail streetcar system is overseen by MARTA in close partnership with Atlanta BeltLine, Inc.
History and concept
As railroad rights-of-way
The first development of the BeltLine area began when the Atlanta & West Point Railroad began building a connecting rail line from its northern terminus at Oakland City to Hulsey Yard on the Georgia Railroad (essentially the southeast quarter of the completed BeltLine). The surveys were done and initial construction had begun when the courts ordered a halt in May 1899 as that work did not fall under the A&WP's charter.

In September 1899, a more ambitious charter for an Atlanta Belt Railway Company was announced that would circle the entire city connecting all rail lines so that freight car transfers could occur on the outskirts rather than downtown. The initial charter was to encompass no more than and named only perimeter points Howell and Clifton Stations. Since Clifton was in DeKalb County, both it and Fulton were named in the charter. After surveys of the route and right of way acquisitions, the DeKalb portion was ditched leaving the entire route in Fulton County. The entire line was completed by 1902.

Concept for transformation
The idea to turn the rail corridors into a ring of trails and parks originated in a 1999 master's degree thesis by Georgia Tech student Ryan Gravel, who founded the non-profit Friends of the Belt Line and works for Perkins+Will. Frustrated with the lack of transportation alternatives in Atlanta, Gravel and two of his colleagues, Mark Arnold and Sarah Edgens, summarized his thesis in 2000 and mailed copies to two dozen influential Atlantans. Cathy Woolard, then the city council representative for district six, was an early supporter of the concept. Woolard, Gravel, Arnold, and Edgens spent the next several months promoting the idea of the BeltLine to neighborhood groups, the PATH foundation, and Atlanta business leaders. Supported by Atlanta mayor Shirley Franklin, previous city council president Cathy Woolard, and many others in Atlanta's large business community, the idea grew rapidly during 2003 and 2004.

The railroad tracks and rights-of-way are owned mostly by CSX Transportation, Norfolk Southern, and the Georgia Department of Transportation. Developer Wayne Mason had purchased most of the NS portion, in anticipation of the BeltLine, but later sold it after conflict with the city.
The total length will be , running about on either side of Atlanta's elongated central business district. It is planned to include a neighborhood-serving transit system (likely streetcars); footpaths, including bicycling, rollerskating, and walking; and the redevelopment of some . The project (although not the funding for it) is included in the 25-year Mobility 2030 plan of the Atlanta Regional Commission for improving transit. As of 2014, the project's planners estimated they had 17 years left before the project would be completed, and no light-rail lines had yet been built.
In 2005 the Atlanta BeltLine Partnership was formed and in 2006 Atlanta BeltLine, Inc. was formed and work began to develop the project.
Connecting the Comet
In September 2019 the James M. Cox Foundation gave $6 Million to the PATH Foundation which will connect the Silver Comet Trail to The Atlanta Beltline which is expected to be completed by 2022.
In May 2022, the James M. Cox foundation announced a $30 million pledge to the PATH Foundation in support of the Northwest BeltLine trails project. This donation combined with previous gifts ensured that the funding is now in place to complete the full 22-mile trail corridor by 2030.





