De Oversteek

De Oversteek
Convicted	Stadsroute 100, footpath ; and bike path
Crossing of	Waal
place	Nijmegen , the Netherlands
Entertained by	Nijmegen municipality
construction	Network arch bridge
overall length	1195 m
width	25-30 m
Longest span	285 m
Construction height	60 m
opening	November 24, 2013
construction time	2011-2013
architect	Laurent Ney and Chris Poulissen
	location

51.858055555556 5.8411111111111Coordinates: 51 ° 51 ′ 29 " N , 5 ° 50 ′ 28" E

De Oversteek is the name of a bridge that crosses the Waal in the Dutch city of Nijmegen . The bridge is located west of the two older Waal bridges in Nijmegen.

The name of the bridge De Oversteek ( German "The Crossing" ) recalls the crossing of the Waal by the US Army on September 20, 1944 , which took place roughly at the location of the new bridge. This was part of Operation Market Garden . Next to the northern foreland bridge, a simple memorial commemorates those who died in the process.

The construction of the bridge was necessary in order to better connect the residential areas that have emerged north of the Waal in recent years to the city center and the industrial areas. This should also relieve the traffic on the notoriously congested Waal Bridge , so that this bridge, which dates from 1936, can be rehabilitated in the next few years with traffic flowing.

Construction of the bridge began at the beginning of 2011 with a two-year delay. In April 2013, the arch superstructure pre-assembled on the north bank was floated into its final position, and on November 24, 2013, the bridge was opened to traffic.

description

The 1195 m long bridge consists of the 285 m long river bridge with a steel arch over its central axis and the approach bridges made of a series of flat concrete arches clad with bricks.

The 680 m long northern foreland bridge with 16 openings crosses the former flood bed in which the Spiegelwaal was excavated when a green area was created. The 230 m long southern foreland bridge leads with 5 ½ arches over the local business and industrial area.

The city route s100 leads over the 25 m wide bridge with two lanes in each direction, which are separated by an empty median, but have no hard shoulders. The cycle and pedestrian paths are shielded from the street by high transparent walls. The approach bridges have wave-shaped widenings of up to 30 m in order to create space for the stairs and ramps that rise up to the bridge deck under the protection of the concrete arches. There is also an elevator tower on the southern approach bridge. These widenings provide space for seating on the walkways of the northern approach bridge.

As usual in the Netherlands, the bridge clearance is given as 24 m above NAP (Amsterdam Level). The bridge level with an inverted scale on the southern pillar has clearance heights between 16 and 8 m.

The current bridge is a network arch bridge , the arch of which splits at the two ends so that it is connected to the bridge panel at its outer edges. The arch has a hollow cross-section and a construction height of 60 m. The bridge panel is also a steel box girder with an orthotropic plate and a completely smooth, slightly curved soffit.

The approach bridges are concrete arch bridges with a constant span of 42.5 m, which therefore could all be executed with the same formwork. Its thin concrete shells rest on prestressed cross bars and two concrete pillars each, between which the view goes along the underside of the bridge to the curves at its ends. The approach bridges manage without expansion joints, as the temperature-related horizontal changes in length on the concrete shells are transformed into vertical movements. The space above the concrete shells is therefore made of foam and lightweight concrete, the outside is clad with bricks made from local clay, a building material that is often found in Nijmegen.

The bridge was built by a consortium of BAM Civiel Nederland and Max Bögl Nederland , with Max Bögl being responsible for the steel bridge and BAM for the concrete work. Leonhardt, Andrä and Partner acted as consultants for the steel arch.