Tunnels are being proposed to improve traffic flow between The Hague and Amsterdam in the Netherlands. The Dutch civil engineering consultancy Royal HaskoningHDV has carried out a study into traffic flows between the two cities. According to the study, traffic flow will improve if tunnels are built at Wassenaar where the N44 road becomes the A44 highway. The study predicts and increase in traffic volumes to 57,000 vehicles/day by 2030. However the study also says that just 20% of the vehicles would be heading for Wassenaar itself. As a result, building tunnels to bypass Wassenaar would help traffic flow. Tunnels to bypass the N44/A44 junction would cost some €160-€180 million, however building a tunnel underneath Wassenaar itself would cost as much as €700 million according to the study.
New $15 billion Interstate bridge between Oregon and Portland
A new $15 billion bridge will span the Columbia River in the US.
