Jobs in Darlington will be supported by a new multibillion-pound Crossrail project on the Maidenhead to east London route.
Crossrail will support around 55,000 full-time jobs in total - including those in Darlington.
Contracts worth 5.5 billion pounds have already been awarded, with 43% given to businesses outside London and the South East.
Firms in Darlington in County Durham are among those awarded contracts, said Crossrail.
Three out of five firms in the supply chain are small to medium sized enterprises.
Total funding for the 73-mile rail route from Maidenhead to east London, due to open in 2018, is 14.8 billion pounds, with most contracts in the supply chain yet to be awarded.
Over 1,700 businesses have secured work connected to the project so far.