MARTA was built with at least three stubs for rail lines that were never built. The Northwest Line towards
Cobb County has a stub tunnel east of
Atlantic Station, but that
redevelopment has not been built with a MARTA station in mind, and Cobb County would instead most likely get a
light rail or
commuter rail system (neither of which have been studied) or a
bus rapid transit service (see
Northwest Corridor HOV/BRT). The Northwest line was reduced to two planned stations but was later dropped entirely. The South Line's branch to Hapeville was considered for extension into Clayton County as far away as
Forest Park, but this idea was also cut off when the voters of that county initially refused to approve tax funding for the line. Another idea for a rail
spur line was for an above-ground line from near the International Airport for a spur line to the town of
Hapeville, but no work has been initiated. The idea to revive expansion plans in the form of heavy rail and bus was approved to go once again before voters in November 2014 by the Clayton county commissioners in July 2014 with a 1% sales tax providing the funding for said expansion. This time, the referendum was approved and Clayton County voted to join MARTA, the system's first ever expansion outside of Fulton, Dekalb and the city of Atlanta. Yet another proposed spur line would have branched off the Blue Line in DeKalb County, Called the
Tucker-North Dekalb Line it would have run northeast to the area of
North Druid Hills, Emory University, and the town of
Tucker. Now under consideration is an idea for light rail line (rather than heavy rail) from Avondale Station to Lindbergh Center, via Emory/CDC. The Northeast Line of the rail system, which has ended in Doraville for two decades, was considered for extension into
Gwinnett County as far as northeast as
Norcross, Georgia, but this idea was cut off when the voters of that county declined to approve sales-tax funding for it. The Proctor Creek branch was also projected to go one more station northwestward to the West Highlands neighborhood, but no work has been done on that one either. Expansion westward to
Fulton Industrial Boulevard through the use of either heavy rail extension or bus rapid transit has been proposed as an extension of the West Line since the system was originally planned.
Clifton Corridor Rapid transit alternatives are as of October 2011, under consideration for the
Clifton Corridor, from
Lindbergh Center, following the
CSX rail corridor to Emory University and the
Centers for Disease Control, with possible continuation along the northern edge of Decatur on to
Avondale MARTA station. Bus, light rail and heavy rail rapid-transit options had been considered, with light rail being selected as the preferred option.
Mall at Stonecrest Expansion Eastward expansion focuses on bus rapid transit from
downtown Atlanta along
I-20 and extension of heavy rail transit from
Indian Creek station, south along I-285 to I-20, then east along the I-20 corridor to the
Mall at Stonecrest. The current Green Line would also be extended east from its current terminus at
Edgewood/Candler Park station to Mall at Stonecrest. This proposed extension has not been studied further since 2018.
Connect 400 The Georgia 400 Transit Initiative (also known as "Connect 400") is a MARTA project to study options for expanding high-capacity transit along the
Georgia State Route 400 corridor into the northern reaches of Fulton county. The initiative, kicked off in December 2011, envisages an 11.9-mile extension of rapid transit service, starting in the south at
North Springs Transit Station, the current terminus of the existing MARTA
Red Line. From there, such an extension would continue northward through the cities of
Sandy Springs,
Roswell, and
Alpharetta, terminating in the vicinity of Windward Parkway. As of the fifth public meeting on the subject on September 26, 2013, the study had narrowed the field of transit technology alternatives to three, all using existing right-of-way along SR 400: heavy-rail transit (HRT, extending the Red Line northward), light-rail transit (LRT), or bus rapid transit (BRT). Early designs for all three options include stations near Northridge Road, Holcomb Bridge Road, Mansell Road,
North Point Mall, and Windward Parkway; initial sketches of the LRT and BRT options also include a station near Old Milton Parkway. As of June 2015, the project is moving into the Environmental Impact study stage of the planning process. According to MARTA Representatives at the April 2015 meetings, the expansion could open in 2025 at the earliest assuming a best-case scenario. Federal funding is still not approved; the Environmental Impact study must be complete. By the April 2015 meeting, the LRT option has been discarded. The HRT option has been approved as the Locally Preferred Alternative, though two BRT options exist - one that would run in a dedicated bus guideway and the other to integrate with Georgia DOT's planned work for the corridor. The GDOT integrated option would include sharing normal traffic lanes at least in some parts of the route. The plans for stations at Mansell Rd. and Haynes Bridge Rd. have been merged into one station at North Point Mall. As of June 2018, the project's adopted alternative is bus rapid transit (BRT) style bus service utilizing express lanes along new toll lanes. Heavy rail expansion will not be considered according to the signed House Bill (HB) 930.
Atlanta Beltline ; numbers represent discontinuities in current rights of way Additionally, several traffic corridors are currently being studied by MARTA for possible system expansion. The
Atlanta Beltline is a proposal for the use of
light rail and possibly bus or
streetcar service on existing railroad
rights-of-way around Atlanta's central business districts. The conversion of existing rail right-of-way to the proposed Beltline also calls for the creation of three additional MARTA rapid transit stations where existing lines intersect the Beltline at Simpson Road, Hulsey Yard, and Murphy Crossing.
Proposed new infill stations Adding another station to the existing line near
Armour Yard (MARTA's main
railyard, opened 2005) has also been discussed, as the Red and Gold MARTA lines, the northeast Beltline light rail, proposed commuter rail lines to points northeast such as
Athens (the "
Brain Train") and
Gainesville, would all pass through Armour Yard. Other stations that have been proposed are; Mechanicsville, Boone, Murphy Crossing, and Krog. The proposed
Atlanta Multimodal Passenger Terminal (MMPT) would be built next to Five Points station, connecting MARTA to surface
passenger rail, including commuter rail, future
intercity rail,
Amtrak, and possible
high-speed rail in the
Southeast Corridor. Additional expansion plans for MARTA and other metro Atlanta transportation agencies are detailed in Mobility 2030 a timeline by the
Atlanta Regional Commission for improving transit through the year 2030. ==See also==