Most of the San Francisco Municipal Railway light-rail vehicle fleet will be getting upgrades over the next five years.

The Italian company AnsaldoBreda, which manufactures the Muni trains, was recently awarded a five-year $54 million contract to overhaul the fleet’s automatic doors and steps, as well as the air supply units and other electrical and mechanical components.

The company maintains a facility in Pittsburg where the upgrades will be done.

According to Muni, 143 of its 151 light-rail vehicles will be getting the upgrades, a few at a time over the next five years.

SFMTA CEO Nathaniel Ford said the improvements would boost the reliability of the light-rail vehicles.

The contract was awarded using $9 million in federal stimulus funding, plus additional federal, local and infrastructure funding, according to Muni.

Please make sure your comment adheres to our comment policy. If it doesn't, it may be deleted. Repeat violations may cause us to revoke your commenting privileges. No one wants that!