Schierstein Bridge

50.03698.208Koordinaten: 50 ° 2 ' 12.8 " N, 8 ° 12' 28.8 " E

F1

Federal highway 643

Rhine, Rettbergsaue

The Schiersteiner Bridge is a 1,282 -meter-long, altogether four-lane highway bridge of the A 643 It spans between Wiesbaden - Mainz- Mombach Schier stone and the Rhine, which is shared here by the Rettbergsaue in two branches. In addition to the further upstream lying bridges Theodor -Heuss- Brücke bridge and manner (A 60 ), it is the third road crossing of the Rhine at Mainz and Wiesbaden.

The bridge consists of six sub- bridges (of which one hundred meters of prestressed concrete ) and was built from 1959 to 1962. It has a combined cycle and footpath on both sides of the lanes. Approximately in the middle upriver a staircase that allows pedestrians access to the island Rettbergsaue (due to the construction of the bridge is Schiersteiner this way but locked since autumn 2013).

Bridge from 1962

History

The first requirement plan for the federal highways in 1956 included, among others, the city ring Mainz -Wiesbaden with the construction of bridges over the Rhine in Wiesbaden - Schierstein, Mainz -Weisenau and the Main Bridge Hochheim. The plans for the bridge over the Rhine in Wiesbaden - Schierstein began in 1955. The traffic was estimated with 7,100 vehicles / day, 23,000 vehicles / day were considered possible. The zoning approval followed on 13 July 1959. The building design created the Leonhardt and Andra in collaboration with Louis Gerst winter. The contract for the superstructure was given on 28 September 1959, the Düsseldorf steel construction company Hein Lehmann AG, which optimized the cross section with an alternative proposal by Hellmut Homberg and 23 % one parte of steel masses against the administration 's proposal. Overall, the superstructures 7895 t steel were needed and the entire building cost 32 million DM

Bridge course

The Schiersteiner bridge begins shortly after the motorway exit Wiesbaden- Äppelallee on the Hessian side and over the Rhine River. To avoid differences in height, the bridge on the Rhineland-Palatinate side of the junction Mainz- Mombach has also extended than half a mile long high street Lenneberg. There was a bridge structure with 31 fields spanning the Mombacher Oberfeld and the Rhine bridge to the high terrace on Lenneberg ( Mainz- Gonsenheim, near Mainz Sand Dunes Nature Reserve ) connects. This has the result that the connection point is one of the few Mombach lying on a bridge.

The bridge was originally built for one of them leading national highway, so there is at said connection point for a very short acceleration and deceleration lanes. But several lighting systems were installed to illuminate the connection point. For cost reasons, these, however, remained dark and the end of April 2013 were reduced. Also on the AS Mombach there are two traffic control systems, but they are also (roughly since the late 1980s) out of service.

The A 643 is missing between the AS and Gonsenheim Mombach emergency lane, which inevitably leads immediately even at low traffic accidents or car breakdowns for storage, as around 80,000 cars daily rolling over the bridge. It is the last bridge over the central Rhine to 85 kilometers away down the Rhine in Koblenz situated south bridge.

Two spiral staircases provide access for pedestrians and cyclists on the left and right side of the bridge. In addition, insists on the eastern side in the summer the possibility of Rettbergsaue a corresponding staircase to come (because of the construction of the bridge Schiersteiner However, since mid-August 2013, this path blocked).

Specifications

The overpass consists of six individual bridges. The first building, then to the bridge structure itself is designed as a junction Mainz- Mombach, the flood bridge Mombach, a two -span composite bridge with a length of 46.4 m 52.2 m = 98.6 m. The next building is the small current bridge, a haunched steel bridge with three fields and 70 m 170 m 70 m = 310 m length. It follows on an island in the Rhine, the three -span bridge flood Rettbergsau, a composite bridge with a constant depth of which is 3 x 70 m = 210 m. The fourth building is the large current bridge over the right arm of the Rhine, a three -span continuous haunched steel bridge with 85 m 205 m 85 m = 375 m length. The subsequent flood bridge Schier stone is again a composite bridge with constant height and construction (70 m 60 m 55 m = ) 185 m length. Finally, after a 4.39 m wide separators followed by a prestressed concrete bridge piers with 3x32, 88 m = 98.64 m length.

Rehabilitation

From 1997 to 2000 was carried out for 21 million DM repair work on the construction of steel, composite steel and prestressed concrete. Also the road surface of the bridge was there, in addition to the existing on both sides of two-wheeler and pedestrian completely renewed between Mombach and Schier stone. According to a report from 2006 to cracks in the orthotropic plate, the building is no longer considered capable of rehabilitation and it was a preliminary remaining useful life determined by the year 2015. This has the consequence that the bridge needs to be reviewed twice a year for damage. Normally in Germany bridge structures are subjected every three years a simple check every six years, a major review. Building a new Schiersteiner bridge was being planned.

Due to the poor condition the pre-existing speed limit of 100 km / h was reduced in the late summer of 2006 to 80 km / hr. Since the spring of 2007 it was further to 60 km / h between junctions Mombach and Äppelallee, lowered. Since August 21, 2007, there is in addition to the Wiesbaden side towards Mainz a big sign: You drive up, we build below. Therefore, 60 km / h because of the roadway construction site is not recognizable. On March 7, 2008, the same sign was now placed on Mainzer just before the flyover Lenneberg. Since 19 September 2008, the rate is controlled by a fixed speed camera on the Wiesbaden side towards Mainz. On the other side no fixed plant is planned, however, are here still .. often mobile radar stations

In addition, a website has been set up with the latest information from the State Office of Highway and Transportation. Since this time, there is now on the entire length of the bridge, including on the high street Lenneberg a top speed of 60 km / h

Jurisdiction

Since most of the bridge in Hesse is and the smaller in Rhineland -Palatinate, only the Hessian state government cares because Met years ago agreement between the two countries to the maintenance of Schiersteiner bridge. The task is the responsibility of the Hessian State Office for Road and Traffic Engineering ( HLSV ) in Wiesbaden. The Rhineland-Palatinate state administration is, however, solely responsible actively in the way Auer bridge. This is also evident by the respective names of the bridges. Schier stone belongs to Wiesbaden ( Hesse), Weisenau to Mainz ( Rhineland -Palatinate).

New building from 2013

The new bridge is planned with two separate superstructures that are designed each 21.72 meters wide and three for driving and an emergency lane and a bike and walkway. First, a superstructure is to be established on the downstream side of the existing structure. Upon completion, the old bridge will be canceled and subsequently built in the route of the existing building, in part, using the old foundation, the second superstructure. The distance between the bridges is not constant. It is determined on the bank of Mainz by the predetermined location of the expansion joint of the existing exit ramp Mainz- Mombach and there amounts to 18.75 meters.

The nature reserve Mombacher bank of the Rhine is affected by the possible construction. The meadows located there serve, inter alia, the white storks in the region as an important food habitats, so must be taken with utmost consideration there.

For the new bridge, a design competition was conducted. In the first place, a draft of a joint venture from the engineering firm Grontmij BGS and the architects Ferdinand Heide was awarded in December 2007. This looks for the new 1285 m long bridge section girder bridges with partially haunched box girder cross-sections before.

According to planning, the actual start of construction in May 2013 should be carried out, with completion expected in 2019. The zoning approval for the new Schiersteiner bridge was signed by the Hessian Transport Minister Dieter Posch on January 5, 2012 from the Rhineland-Palatinate Minister of Infrastructure Roger Lewentz on March 2, 2012. As a preparatory measure for the planned new first clearing work was carried out in March 2012 in the area of ​​Schiersteiner Cross. On 7 June 2013, the award of the contract for the new bridge over the Rhine Schier stone with a contract sum of approximately EUR 173.4 million was announced (without VAT).

With the ground-breaking ceremony on 12 September 2013, the new building was officially launched. After extensive Site preparation began in October 2013, the foundation work for the new bridge piers. This work is planned to start in 2014.

Landmark

On the bridge is a landmark, with the coat of arms of Rhineland -Palatinate and Hesse, which was produced in 1961 by Raimund Eser. Donated this was from the Wilhelm Dyckerhoff Institute, Wiesbaden.