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A1, new construction of the Rhine bridge Leverkusen and ramp K35

Photo: Visualisation of the future motorway bridge – two separate structures running parallel to each other across the Rhine
Facts and Figures
Company PORR GmbH & Co. KGaA
PrincipalLandesbetrieb Straßenbau NRW
LocationKöln - Germany
Type Bridge building
Runtime01.2018 - 01.2026

Fit for the future: new Rhine crossing.

Every day, 120,000 vehicles travel over the six lanes of the Rhine bridge at Leverkusen, making it one of Germany’s most heavily used motorway bridges. It is hardly surprising that the fifty-year old bridge has reached the limits of its capacity. In 2017, PORR was awarded the 360-million euro contract to build the desperately needed new bridge – and in the process, to demonstrate our expertise in civil engineering, earthworks, foundation engineering and environmental engineering.

The new bridge is a substantial project. Our task involves demolishing the existing bridge and building two, structurally separate, new bridges over the Rhine. The new infrastructure project also incorporates widening the A1 between the Cologne-Niehl motorway junction and the Leverkusen-West interchange, reconstructing the Leverkusen-West interchange and carrying out modifications around the Cologne-Niehl junction.

Steel and concrete.

Three new bridges will be built in the course of the project: the foreshore and river bridges, and the bridge for the ramp for the Leverkusen distributor lane. 

The foreshore bridge takes the A1 over the Rhine foreland, the roads Merkenicher Haupstrasse and Kasselberger Weg in Cologne; it has been designed with continuous beams over six spans and a prestressed concrete construction for each superstructure. 

  • Span in axis: 53.50 + 4x 68.00 + 51.45 m
  • Total span: 376.95 m
  • Bridge deck area: 11,067.3 m² (both directions)
  • Width between the railings: 29.36 m (direction Trier and Dortmund) 
  • Concrete: approx. 16,629 m³ (direction Trier) and approx. 16,631m³ (direction Dortmund)
  • Reinforced concrete: approx. 2,535.5 t (both directions)
  • Prestressing steel: approx. 525 t (both directions)

The river bridge transfers the A1 over the Rhine foreland, the A59, the distribution lanes for the A59 and the cycle path on the right bank of the Rhine. The continuous beams cover seven spans per superstructure, rather than the six of the foreland bridge. We are using a steel/steel composite construction with a superstructure suspended from A-pylons on both sides of the Rhine.

  • Span in axis: 60.00 + 2x 74.00 + 280.00 + 2x 74.00 + 52.70 m
  • Total span: 688.70 m
  • Width between the railings: 29.36 to 35.66 m (direction Trier) and 29.36 to 33.65 m (direction Dortmund)
  • Bridge deck area: 23,169.9 m² (direction Trier) and 23,079.3m² (direction Dortmund)
  • Concrete: approx. 20,359 m³ (direction Trier) and approx. 20,164m³ (direction Dortmund)
  • Reinforced concrete: approx. 3,055 t (direction Trier) and approx. 3,008t (direction Dortmund)

The ramp bridge for the Leverkusen distributor lane carries one of the A59 distributor lane over other A59 distributor lanes. We are building a new bridge and demolishing the existing structure (K35). The continuous beams here cover 13 spans. The superstructure is being constructed as a steel composite cross-section with a loosely reinforced concrete slab roadway.

  • Span in bridge axis (radian): 351.40 m
  • Total width: from 12.70 to 15.45 m
  • Concrete: approx. 4,321 m³
  • Reinforced concerete: approx. 824 t

Focus on deadlines.

Work on the new Rhine bridges began in January 2018; however, we have had to modify the original schedule which anticipated completion of the first bridge section in November 2021. This was partly due to a complicated explosive ordnance survey, which resulted in a two-year delay before the construction site could be approved. However, we have already succeeded in making up one of these years. Working with our project partners, the focus now is on ensuring that there are no further delays.