A27 Everdingen-Hooipolder

As little disruption as possible

We are improving a total of 40 kilometers of highway. In the direction of Utrecht, the A27 between the Hooipolder and Everdingen junctions will have three lanes. Between Werkendam and Scheiwijk, these will be regular lanes, and the rest of the route will have a rush-hour lane. In the other direction, there will be four regular lanes between Scheiwijk and Werkendam. The other parts of the route will have three lanes, one of which will be a rush-hour lane.

This means that we will also be replacing or widening 50 existing structures, such as the Merwede Bridge near Gorinchem, on this route. To minimize disruption to road users, we will be building the new bridge in stages.

First, we will build a new bridge next to the existing bridge, which all traffic can use. We will then demolish the old bridge and build a second new bridge in its place. Ultimately, there will be two bridges side by side at both locations: one for northbound traffic and one for southbound traffic.

Special component

A special component is the renewal of the asphalt on the existing steel Merwede Bridge. Due to the movements of the bridge, an innovative structure was chosen, consisting of mastic asphalt, roofing felt, and a special top layer. Ballast Nedam belongs to a select group in the Netherlands that has mastered this technique.

Fair money for fair work

An important aspect of keeping the risks manageable within the project is Rijkswaterstaat's two-phase approach for, among other things, the Merwede Bridge and the area with poor soil conditions between Gorinchem and Lexmond. In the first phase, we will work with Rijkswaterstaat to develop the design, planning, and cost estimate. In the second phase, we will carry out this work. This two-phase contract allows us to base the costs more accurately on the current situation and distribute the potential risks more fairly. The implementation agreement for road section 7 (Lexmond–Gorinchem) was signed in December 2025. This officially marks the start of the implementation phase for this section, an important step towards the full realization of the Everdingen–Gorinchem corridor.

Underpass at Hooipolder

A recent milestone was the insertion of a new underpass beneath the A27 motorway at the Hooipolder junction in just 100 hours. This spectacular operation could be followed live via a livestream provided by the project team. In addition, the underpass at Oosterhoutseweg has also been successfully slid into its final position — an important step in the realization of the junction's new connecting curve.

ALSÉÉN

To successfully carry out this project, we are working together with Fluor Infrastructure under the name ALSÉÉN. We have previously worked together successfully on the A9 Gaasperdammerweg project.

The research and design phases of the two-phase components have now been completed and we are currently in the implementation phase. We have also already started construction of the connection to the future Groote Haar business park in Gorinchem and improvements to the Hooipolder junction. The implementation agreement for road section 7 (Lexmond–Gorinchem) was signed in December 2025. This marks the official start of the implementation phase for this section, an important step towards the full realization of the Everdingen–Gorinchem corridor.