Steinheim Main Bridge
Coordinates: 50 ° 7 ′ 23 " N , 8 ° 54 ′ 40" E
  Steinheim Main Bridge
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| use | Railway and road bridge | |
| Crossing of | Main | |
| place |
Hanau - Hanau-Steinheim (Main km 56,370) |
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| construction | Parallel steel framework; Tied arch bridge | |
| overall length | 246 m | |
| Headroom | 6.10 / 5.95 / 6.60 m | |
| construction time | 1873 | |
| location | ||
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The Steinheim Main Bridge is a crossing of the Main at river kilometer 56,370 in Hanau , consisting of three parallel bridges , which connects the Hanau city center and the Hanau-Steinheim district and serves both rail and road traffic.
Technical Equipment
The bridge consists of three structures lying directly next to each other (from east to west):
- Steel shed road bridge on Bundesstrasse 43 and Bundesstrasse 45 , two lanes with bicycle and pedestrian lanes on both sides;
- Steel truss bridge of the Frankfurt-Bebraer Railway ( Frankfurt – Hanau section ), double-track , 238 m long;
- Steel tied arch bridge for the Frankfurt Schlachthof – Hanau railway line (S-Bahn), single-track.
Immediately northeast of the bridge, the B 43 / B 45 joins the Hafenplatz and the two railway lines join the entrance to the Hanau main station . At the southwest end, the Steinheim (Main) station used to be connected, today it is only a stop for the S8 and S9 S-Bahn lines .
S-Bahn Bridge
The single-track bridge consists of a foreland bridge with three fields on the left bank of the Main. The prestressed concrete structure has spans of 25.175 m, 25.175 m and 27.319 m. The Main is freely spanned with a steel tied arch bridge with 160.2 m span and a steel weight of 1450 t. The two-sided arches are inclined in their plane 8 ° to the vertical and united over a length of 62 m at the apex to form a common center piece. The two 3.1 m high stiffening girders, which are also inclined and 7.1 m apart, are removed with hangers made of round steel profiles with a diameter of 100 mm at a distance of 10.68 m. The arch stitch, measured at the top of the arch from the top edge of the stiffening beam to the middle of the arch, is 22.2 m.
history
In 1873, the road bridge was the first fixed crossing of the Main in the Hanau area since the Roman bridge, which was located a little downstream from the Steinheimer Bridge, below the vicus and Salisberg fort , had been destroyed around 1600 years earlier.
The Steinheim Main Bridge became necessary when the Bebra Railway, which was under construction, did not end in Hanau after the annexation of Kurhessen by the Kingdom of Prussia in 1866, but was to continue to Frankfurt am Main . Since the north Main Railway line had existed since 1848 and was in private hands, the Prussian State Railway only had the option of running its own route south Main via the territory of the Grand Duchy of Hesse . This required a crossing of the Main. At the same time the connection to the industrial city Offenbach am Main was gained .
The location of the bridge was determined by various topographical conditions: the exit of the Bebraer Bahn from the Kinzig valley , the intersection with the extension of the Frankfurt-Hanauer Eisenbahn to Aschaffenburg and the Mainbow south-west of Hanau. In order to be able to cross the Main by the shortest route, i.e. at right angles , relatively narrow, opposing curves were required on both sides of the bridges. This was not a problem at the speeds used at the time, today this section of the route is a permanent speed limit.
The first to be completed in 1873 was the road bridge, which initially served both road and rail traffic. The latter was recorded on November 15, 1873. From December 1, 1875, rail traffic was then carried over its own bridge. Between September 30, 1909 and 1933, line 3 (Markt - Steinheim Obertor) of the Hanau tram also crossed the bridge.
In World War II the main transition was at its southeast end, at Steinheimer River Main, a flak tower . In the spring of 1945, German troops blew up the bridges as they withdrew. With a makeshift construction, pedestrian traffic was initially made possible again in 1945 and rail traffic was resumed on August 2, 1947 - initially on a single track - before the final reconstruction took place. The flak tower had survived it all and now served as a home for scouts .
At the beginning of the 1990s, the new S-Bahn bridge, located west of the previous bridges, was built and went into operation in 1995. The flak tower was also torn down. During the construction work, a Neolithic dugout came to light in the bank area . The bridge arch was mounted on the bank and then - with one end floating on a pontoon - swiveled into its final position .
literature
- Fritz Paetz: Data collection on the history of the railways on the Main, Rhine and Neckar . Bensheim-Auerbach 1985, p. 9.
- Martin Hoppe: Hanau and the Main . Hanau 2005
Web links
Individual evidence
- ↑ a b Federal Waterways and Shipping Administration: Route Atlas Main I. (PDF 11 MB) (No longer available online.) 2010, p. 53 , archived from the original on January 14, 2015 ; accessed on January 24, 2015 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ DB Netze Infrastructure Register
- ^ Werner Schömig: S-Bahn bridge over the Main near Hanau-Steinheim. In: Steel construction. 64th year, January 1995, issue 1, pp. 8-15
