The project

The A1/A6 project involved the upgrade of 18km of two three-lane highways between Amsterdam and Almere into five-lanes, at a cost of €700 million. DIF owns a 43% stake in the project company, with our consortium partners Boskalis, Hochtief and VolkerWessels owning the remaining shares.

Status
Operational
Investment date
March 2013
Country
The Netherlands
Fund
DIF III
Vehicles on a highway
2
Record-breaking structures
4.5yr
Work
25yr
Concession length
43%
Equity stake

The A1/A6 is part of the wider Schiphol-Amsterdam-Almere (SAA) highway extension program to improve connections across the whole region. The road opened to traffic well ahead of schedule in the summer of 2017, has a concession length of 25 years and was the first project of five similar projects to reach completion – hence the consortium name: SAAone. Road capacity has been significantly increased, traffic time reduced and the overall quality of the environment much improved.

The project includes two record-breaking structures. The Vechtzicht aqueduct close to Muiden, east of Amsterdam, is the largest in the Netherlands and the widest in the world at 65 metres. The 255-metre railway bridge over the A1 near Muiderberg, meanwhile, is the longest railway arch bridge in Europe.