The S9 service of the S-Bahn Rhein-Main system bearing the KBS (German scheduled railway route) number 645.9.

City tunnel

The city tunnel is an underground, pure S-Bahn route used by almost all services (except for the S7 service which terminates at the central station). In a short section between Mühlberg and Offenbach-Kaiserlei a line parallel with the South Main railway is used.

History

This service was first introduced in 2000 to provide an alternative route to Wiesbaden via Frankfurt Airport skipping Rhineland-Palatinate

Rhineland-Palatinate

Rhineland-Palatinate is one of the 16 states of the Federal Republic of Germany. It has an area of and about four million inhabitants. The capital is Mainz. English speakers also commonly refer to the state by its German name, Rheinland-Pfalz ....

 and its capital Mainz

Mainz

Mainz under the Holy Roman Empire, and previously was a Roman fort city which commanded the west bank of the Rhine and formed part of the northernmost frontier of the Roman Empire...

.

Operation

1. Wiesbaden Hbf – Hanau Hbf
2. Wiesbaden Hbf – Frankfurt Hbf
3. Wiesbaden Hbf – Offenbach Ost (sundays only)
4. Flughafen Regionalbahnhof – Frankfurt Hbf (former S15 service)
5. Flughafen Regionalbahnhof – Offenbach Ost (sundays only)

						Journey time		Station		Transfer	S-Bahn service since
1	2	3	4	5
Wiesbaden
					0			Wiesbaden Hbf Wiesbaden Hauptbahnhof is the Hauptbahnhof for the city of Wiesbaden, the state capital of the German state of Hesse. It is a terminal station at the southern edge of the city center and is served by over 500 long-distance and regional trains and used by more than 30,000 travelers each day.-History:The current station...		1978
					4	+4		Wiesbaden Ost		1978
					8	+4		Mainz-Kastel		1978
Kreis Groß-Gerau
					15	+7		Mainz-Bischofsheim Mainz-Bischofsheim station Mainz-Bischofsheim station is the station of the town of Bischofsheim in the German state of Hesse on the Main Railway from Mainz to Frankfurt am Main. It is classified by Deutsche Bahn as a category 3 station. The station is served by the S-Bahn and regional trains...		1978
					18	+3		Rüsselsheim-Opelwerk		1978
					21	+3		Rüsselsheim Rüsselsheim station Rüsselsheim station is a transit station in the town of Rüsselsheim in the German state of Hesse on the Main Railway from Mainz to Frankfurt am Main. It is classified by Deutsche Bahn as a category 3 station. The station is served by the S-Bahn and regional trains. There is another station in...		1978
					24	+3		Raunheim		1978
					29	+5		Kelsterbach Kelsterbach station Kelsterbach station is the station of the town of Kelsterbach in the German state of Hesse on the Main Railway from Mainz to Frankfurt. -History :...		1978
Frankfurt am Main
					35	+6		Frankfurt Flughafen Regionalbahnhof		1978
					39	+4		Frankfurt Stadion		1978
					42	+3		Frankfurt-Niederrad Frankfurt-Niederrad station Frankfurt-Niederrad station is a station in the district of Niederrad in the southwest of Frankfurt am Main in the German state of Hesse.-Location:...		1978
					46	+4		Frankfurt Hbf Frankfurt (Main) Hauptbahnhof is the central station for Frankfurt am Main. In terms of railway traffic, it is the busiest railway station in Germany. With about 350,000 passengers per day the station is the second most frequented railway station in Germany and one of the most frequented in Europe.- Proto-history :In the late...		1978
					47	+5		Frankfurt Hbf (tief)		1978
					49	+2		Taunusanlage		1978
					51	+2		Hauptwache		1978
					52	+1		Konstablerwache		1983
					54	+2		Ostendstraße		1990
					56	+2		Mühlberg		1992
Offenbach
					59	+3		Offenbach-Kaiserlei		1995
					61	+2		Ledermuseum		1995
					63	+2		Marktplatz		1995
					66	+3		Offenbach Ost		1995
Kreis Offenbach
					70	+4		Mühlheim		1995
					72	+2		Mühlheim-Dietesheim		1995
Main-Kinzig-Kreis
					75	+3		Hanau-Steinheim		1995
					78	+3		Hanau Hbf Hanau Hauptbahnhof is the central station for Hanau, Germany and a major rail junction east of Frankfurt am Main.The first Hanau station was built on the Frankfurt-Hanau Railway at the location of the current Hanau West station, close to Hanau city centre....		1995

External links

• traffiQ Frankfurt – S8/S9 timetable