The Forth Crossing Bridge Constructors consortium has handed out the work bonanza to local firms on the £1.5bn scheme.
Transport Minister Keith Brown said: “This is excellent news and continues to show how crucial this project is for Scotland’s economic recovery as well as its future prosperity.
“We always said that the main contract would provide increasing opportunities for Scottish firms during the construction period.
“This will continue all the way into 2016 when the bridge is completed and open and begins providing a significantly improved economic artery across the Forth.
“I’m particularly pleased that Scottish firms are obviously succeeding in winning an increasing share of the available subcontract and supply business.”
By the end of 2012, Scottish firms had won 63% of subcontracts and 89% of supply orders – up from 60.5% and 86.5% in July.