New York City's mass transit system is set to order for more than 300 subway cars made by Montreal-based Bombardier Transportation.

Gov. Andrew Cuomo will announce the $600 million contract later today. The cars will be built in Plattsburgh, keeping 500 jobs alive and provide stable, higher-paying manufacturing jobs for several years.

Cuomo says the deal will keep 300 workers busy and support 200 more jobs from suppliers.

The Metropolitan Transportation Authority says the new cars will replace the subway's oldest cars, improving service in the massive system. The contract will be paid in part with $305 million in federal money.

The company won the contract by offering the lowest bid. Bombardier has built subway cars for the city since 1981.