Construction work is restarting on Melbourne’s West Gate tunnel project. Construction of the tolled tunnel link is costing US$5.2 billion (A$6.7 billion). The project is controversial and has met with considerable political opposition in Australia. Those against the link say that building a second river crossing is not necessary and that it will merely increase travel costs for drivers as it will be tolled. However those in favour of the link say that it is required due to the heavy traffic congestion. A recent crash on the existing link blocked the roadway, brining traffic to a standstill, which those in favour of the tunnel claims proves the need for the new link.