Question: CSX Transportation owns about 21,000 route miles in Florida alone; How many miles does it's Georgia line run?

Context paragraphs:
CSX Transportation Building: The CSX Transportation Building is a 251 ft high-rise office building located in Jacksonville, Florida.  Completed in 1960, the building currently serves as headquarters for CSX Corporation.  The building is located in the Northbank area of Downtown Jacksonville, along the banks of the St. Johns River.  Its former names include Atlantic Coast Line Building and Seaboard Coastline Railroad Building.  Designed by KBJ Architects, the CSX Transportation Building is a LEED certified building and is an iconic example of Mid-century modern and International style architecture.

CSX Transportation: CSX Transportation (reporting mark CSXT) is a Class I railroad in the United States.  The main subsidiary of the CSX Corporation, the railroad is headquartered in Jacksonville, Florida, and owns about 21,000 route miles (34,000 km).  CSX operates one of the three Class I railroads serving most of the East Coast, the other two being the Norfolk Southern Railway (NS) and Canadian Pacific Railway.  It also serves the Canadian provinces of Ontario and Quebec.  Together CSX and Norfolk Southern Railway have a duopoly over all east-west freight rail traffic east of the Mississippi River.  As of August 8, 2017, CSX's total public stock value was slightly over $41.5 billion.

Nashville Terminal Subdivision: The Nashville Terminal Subdivision is a railroad line owned by CSX Transportation in the U.S. State of Tennessee.  The Subdivision is broken up into 5 sections all in Nashville, Tennessee.  The northern part of the Terminal is in Madison, Tennessee at milepost 000/0BA 174 on the southern end of the Ex-L&N Mainline Subdivision at Monfort.  Disptach for the Mainline Sub is known as "LD" which is part of the Cincinnati Division.  From here in Madison begins the double track that stays for another 22 miles south to Brentwood, Tennessee.  At milepost 000/0BA/00H 176.6, the famous Johnny Cash "Amqui" location where the Ex-L&N Evansville, Indiana line, the Henderson Subdivision meets with the Terminal.  Dispatch for the Henderson Sub is known as "SA" and operates on AAR58.  There are two crossings near each other, Williams Ave and Nesbitt Lane at Amqui.  From here the Terminal goes south about 2 miles to the Nashville National Cemetery to the first major location, known as Ekin, 000179, where there is a cross over track from number 1 to number 2 track (left to right track).  There is also the first EDD (Defect Detector) at 000179.1.  Few more miles southward, the next major location appears.  At 000181.0, Maplewood is a major location for the Terminal.  From here the regular Terminal goes south to swap crews at Kayne Ave, and the right side, Radnor Cutoff, detours the city and gives yard departures and arrivals direct access to and from Radnor yard to cities like Louisville and Chicago.  The Cutoff runs from Maplewood to Shelby Park double track.  From Shebly the track converges into one to pass the historic Shelby bridge, then it opens back to double track.  From there, the cutoff hits the Intermediates at 0BA187.0 known as Chicken Pike.  The Radnor Cutoff carries the L&N mainline classification of "0BA" but meets the main at the same milepost from the Terminal.  At Chicken Pike, trains are staged to await arrival to Radnor yard.  Once they get clearance, speed is decreased to 15, and at 0BA188.1 the EDD (Defect Detector) sounds for departures and arrivals.  This location is known as North Radnor.  The right track diverging from the #2 is known as A-1, it is for departure trains to Chattanooga and Atlanta.  The left track which goes west from the #1 is known as A-2, and serves as a departure track to Memphis, and if the cutoff is out of service, all northbound departures.  The interesting piece of Maplewood is the crossovers that are there to move trains from the Cutoff to the Main.  Both lines remain double track for a while.  The main runs south for 2 more miles until the Intermediate signals at 000183.0.  Commonly trains will stop before Delmas Ave when Kayne Ave is at capacity and await dispatch permission before moving south.  From here, the main continues south until the CR Cumberland River Swingbridge, where the main converges into a single track shortly to cross the bridge.  At this point, trains had been running at track speed of around 40.  From the drawbridge into town, speed is reduced to around 10.  After the bridge is passed, the main returns to double track in downtown.  On the #1 track about a half a mile south, another connecting track is present.  This is the Wye track that connects the main with the Bruceton side, while rarely used for mainline trains, locals and river jobs use it.  The location is known as 8th Avenue or 8th Avenue Wye.  The main then runs down to Kayne Ave, the central hotbed of all Nashville thru traffic.  The Memphis, Tennessee Ex-L&N Bruceton Subdivision meets with the Terminal.  The Bruceton Sub begins at Church Street at 00N0.0.  The line then runs single track until 00N0.7 "11th Avenue" where it turns into double track and also meets the aforementioned, Wye track.  The Bruceton line then goes southwest a while to the next signals, at "Shops".  Now speed has been increased.  The line is still double track until "Sellars", where speed is increased to 40 and jurisdiction transferred to the SD Dispatcher.  For a short time, 4 main tracks are present and an additional fifth track for switchers and yard movements.  The tracks from left to right in Kayne Ave are as follows: 100, 99, 98, 12, 3.  The Kayne Ave yard is also here in this area, which houses some frieght and some switcher engines.  The tracks to the old shed are covered and removed.  The Union Station is not an active station, but a historic hotel.  Crew change usually occurs at the "walkway" which is under the Demombreun St bridge by the Kayne Ave Tower.  This is also where the Ex-NC&StL Chattanooga Subdivision begins.  Then tracks run south to Fogg St/South End where things get complicated.  At milepost 000/0BA/00J187 the 98 track merges into the 12 track, making for 3 tracks now.  There is a crossover from 99 to 12, also a crossover from 12 to 3.  About 2/10ths of a mile down the 99 merges into the 12 track reducing the tracks back to the regular double.  About 4/10ths of a mile down the line from Fogg St, 000187.4, Oak St, is a crossover track from #2 to #1 (the track names are no longer 3 and 12, but are back to regular names).  When trains use this crossover northbound, such as Memphis bound trains from the A-2 line, they refer to it as "Long Lead".  And now, the Terminal splits into two parts.  The right side turns into a single track shortly, and will become the Chattanooga Subdivision, and the left side runs south to Brentwood.  The right track runs single shortly until double track for a while.  This begins part of the Chattanooga Sub or J-Line.  The #2 meets with the A-2 connection track at 00J2.2 known as A-2.  Speed is now increased to 40.  Commonly northbounds will stage at 4th Ave on the #1 to await clearance.  Now about a mile down the #1 meets the A-1 connection line.  At 00J3.6 known as A-1.  Further down the double track ends at Glencliff (00J4.9).  Now it runs single for three miles until it hits Danley, which has the D Line connection track, which is an arrival track for incoming Radnor trains from the J Line.  At Danley, the Terminal ends but the same dispatcher handles traffic, "SC".  At Oak Street, our main terminal line goes south two miles to 000189.0 known as Criaghead or Vine Hill.  There is a crossover here from #1 to #2 track.  And there is also a connection/delivery track to the Nashville and Eastern Railroad which connects the Tennessee Central Railroad Museum to a major railroad.  Trains sometimes stop on the #2 before Craighead if they are waiting to enter Radnor yard.  Sometimes trains wait on the #1 at the Berry Road crossing if they await arrival to Kayne Ave. At this point, speed has been increased to 30 from 10.  Moving south, the line hits Radnor Yard at 000192.  The #2 track meets the E-Line arrival track which most Memphis trains and locals use.  The B-Line which meets the #1 track is used for departures out of the C yard and local jobs.  At Mayton, 000192.3, the B line meets the #1 track, and there is a crossover track from #2 to #1.  Speed is now at 40.  2 miles south, at 000194.0, South Radnor, the next intersection is present.  This is where the Radnor A yard meets the main.  There is a single departure/arrival track that meets the #2 track along with a crossover from #1 to #2 track.  Commonly, the #2 track south of the signals is used to halt trains.  This location is known as TVA, because of the power station that is adjacent.  From here the Terminal runs about 2.5 miles south until we hit the southern tip.  The tracks converge onto one single main, at 000/0BA196.6 known as Brentwood.  Speed is increased to 50 and jurisdiction to the S.E. dispatcher.  The right track is the main, S&NA North, while the left track is the Nashville Subdivision which runs to Columbia and exchanges freight with the TSRR.  The Nashville Terminal Subdivision is one of the busiest locations on the CSX network, and one of the most important.

Riceboro Southern Railway: The Riceboro Southern Railway (reporting mark RSOR) began operations in 2004 operating on about 33 miles of track, some of which is leased from CSX Transportation.  The track on which it operates is part of the ex-Seaboard Air Line route from Savannah, Georgia to Jacksonville, Florida.  The tracks were taken up between Riceboro, Georgia and Kingsland, Georgia.  It runs generally from Ogeechee, Georgia, where the line splits from the CSX Nahunta Subdivision, which is the former Atlantic Coast Line Railroad's Savannah-Jacksonville route, and Riceboro.  It does not have any of its own locomotives - it uses Georgia Central power.

Cartersville Subdivision: The Cartersville Subdivision is a railroad line owned by CSX Transportation in the U.S. State of Georgia.  The line runs from Cartersville, Georgia and Cedartown, Georgia for a total of 36.1 miles.  At its east end it continues west from the W&A Subdivision and at its west end the track comes to an end.

Savannah Subdivision: The Savannah Subdivision is a railroad line owned by CSX Transportation in the U.S. State of Georgia.  The East Route runs from Savannah, Georgia to Ogeechee, Georgia for a total of 15.6 miles.  At its north end it continues south from the Charleston Subdivision and the Columbia Subdivision both of the Florence Division and at its south end it continues south as the Nahunta Subdivision.  The West Route is located in Savannah, Georgia and is 9.7 miles in length.  At its north end it branches off of the Savannah Subdivision East Route and at its south end it comes back into the Savannah Subdivision East Route.

Chapman, Lawrence County, Kentucky: Chapman is an unincorporated community located in Lawrence County, Kentucky, United States on the eastern bank of the Levisa Fork River.  It is served by KY Route 2037.  A high volume railway line, operated by CSX Transportation, extends through its limits and continues in a southerly direction throughout southeastern Kentucky to western Virginia and points south.  Although its location is many miles from the nearest industrial employer, the railroad has served the community as a source of employment.  The railroad was first built through the community in 1880 by CSX's predecessor, the Chesapeake and Ohio Railway.  C&O employees who resided in Chapman caught the train as it passed through on its multiple daily runs where they reported to work.  Chapman, Kentucky is named after its first settler and prominent landowner David Chapman (1803–1845), a native of Montgomery, West Virginia.  Many of Chapman's descendants still reside in the community at this time.  Chapmansville, West Virginia, a city located on U.S. Route 119 about forty miles east of Chapman, was established in 1800 by David Chapman's uncle Ned Chapman, as he was its first postmaster and general store operator.  The Chapman surname is an anglicized version of the German name Kaufmann, the German word for merchant.  David Chapman's ancestors originally emigrated to North America from Kaufmann, Germany.  Chapman is located 10 mi south of Louisa, Kentucky.

Oak Point Yard: The Oak Point Yard is a freight railroad yard located in the South Bronx, New York City.  The yard is owned by CSX Transportation, and is a base for CSX's local deliveries in the area, including to the Hunts Point Cooperative Market and for trains that interchange freight with the New York and Atlantic Railway at Fresh Pond Junction in Queens.  CP Rail formerly handled some freight in and out of Oak Point, but during late 2010 entered a haulage-rights agreement with CSX under which CSX handles and forwards its local traffic between Oak Point and the Albany, New York area.  Stone-hauling trains belonging to the Providence & Worcester Railroad operate through Oak Point during trips between New Haven, Connecticut and the NY&A at Fresh Pond, but no P&W freight is actually handled in the yard.  Amtrak owns and operates two electrified tracks for the Northeast Corridor Line, on the northwest side of the yard.  CSX uses the Oak Point Link, a connecting track along the Harlem River, to travel between the yard and the Metro-North Hudson Line, which is its primary access route into New York, while the P&W stone trains enter via the Northeast Corridor line to the northeast.  CSX and P&W trains to Fresh Pond cross the Hell Gate Bridge onto Long Island.

List of CSX Transportation lines: CSX Transportation owns and operates a vast network of rail lines in the United States east of the Mississippi River.  In addition to the major systems which merged to form CSX - the Baltimore and Ohio Railroad, Chesapeake and Ohio Railway, Louisville and Nashville Railroad, Atlantic Coast Line Railroad and Seaboard Air Line Railroad - it also owns major lines in the Northeast acquired from the 1998 breakup of Conrail.

Post Road Branch: The Post Road Branch is a railroad line owned and operated by Amtrak in the U.S. state of New York.  The line runs from a junction with CSX Transportation's Berkshire Subdivision in Castleton-on-Hudson, New York northwest to CSX's Hudson Subdivision at Rensselaer, NY (near Albany, NY) along a former New York Central Railroad line.  Freight service is provided by CSX Transportation, who calls it the Post Road Subdivision, via trackage rights.

Supporting paragraphs: Cartersville Subdivision CSX Transportation
Answer: 36.1 miles.