Frankfurt Airport loop

Frankfurt Airport loop
Overview
Native name	Flughafenschleife Frankfurt
Line number	3683
Locale	Hesse, Germany
Service
Route number	645.8, 645.9
Technical
Line length	15.8 km (9.8 mi)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Electrification	15 kV/16.7 Hz AC overhead catenary
Operating speed	120 km/h (75 mph)
Maximum incline	approximately 3.6%
Route map Legend City Tunnel from Frankfurt South and Offenbach Frankfurt (Main) Hbf 0.0 Frankfurt (Main) Hbf (underground) City Tunnel Homburg Railway, Main-Weser Railway to Frankfurt West Main-Neckar Railway, Frankfurt-Bebra railway goods line 2.1 Frankfurt (Main) Kleyerstr. (junction) 2.2 Frankfurt (Main) Gutleuthof (junction) Taunus Railway to Frankfurt-Höchst Main-Lahn Railway to Frankfurt-Griesheim Main 4.4 Frankfurt-Niederrad Main Railway to/from Frankfurt South 6.2 Frankfurt am Main Stadion Riedbahn to Gernsheim 6.6 (Flying junction) 9.5 Gateway Gardens Frankfurt-Schwanheim long-distance (junction) (Flying junction) Main Railway to Kelsterbach 9.0 Frankfurt-Schwanheim S-Bahn (junction) 10.2 Frankfurt Airport tunnel (2234 m) 10.4 Cologne–Frankfurt HSL from Frankfurt 11.4 Frankfurt Airport regional station Frankfurt Airport long-distance station 12.4 Frankfurt Airport tunnel (2234 m) 12.6 Cologne–Frankfurt HSL to Cologne Main Railway from Frankfurt am Main Stadion 15.8 Kelsterbach Main Railway to Raunheim Source: German railway atlas[1]

The Frankfurt Airport loop (German: Flughafenschleife Frankfurt) is a 15.8-kilometre-long (9.8 mi) double-track railway line connecting Frankfurt and Frankfurt Airport and operated as part of the Frankfurt S-Bahn. It is electrified at 15 kV/16.7 Hz.

The line was built in two stages between 1968 and 1980 and has since been mainly used by S-Bahn services.