The responsibility to manage and maintain the Forth Road Bridge and the new Queensferry Crossing is to be awarded to Amey.

It will be in charge of the crossings and the adjacent trunk roads from June 1 2015, with the contract due to be formally signed before Christmas.

The Queensferry Crossing is due to open in 2016. The company will provide special unit to run the bridges within the Scottish Trunk Road Network.

Minister for Transport and Islands Derek Mackay said: "The trunk toad network is essential for people to commute, and for goods and services to be delivered across Scotland, and there will be few more visible examples of these connections than the bridges across the Forth, which will unite north-east Scotland, Fife, the Lothians and the central belt."

He said the government is spending £677.7 million in the 2015/16 financial year on trunk roads and motorways. Part of the deal will see local small and medium-sized enterprises given a role in the work. There will also be training and employment initiatives, as well as educational and charitable contributions by Amey.