Expansion of the A9 Badhoevedorp-Holendrecht motorway (Netherlands)
The project involves the refurbishment of an 11.4 km section of the A9 motorway between Badhoevedorp and Holendrecht. The works consist of widening the carriageway from three to four lanes in each direction, with the corresponding extension of existing structures (11), new junctions with other roads, as well as bridges and tunnels. Of particular note is a 1.7 km section where the plan is to lower the road level (currently on an embankment) and convert it into a cut-and-cover section, comprising three covered sub-sections. The project has been carried out whilst maintaining traffic flow on the existing motorway and minimising the impact on the urban environment.
The new covered areas will help to regenerate the most urban part of the area, creating new spaces for green areas, roads, etc., with the ‘Tree Bridge’ – a highly distinctive architectural bridge spanning the enclosed section of the Keizer Karelweg – being one of the project’s most significant features.
