The MBTA is receiving a $200 million allocation from the millionaire’s tax to address safety, hiring and retention and to improve infrastructure across the beleaguered transit network.

A day after commuters couldn’t get to downtown Boston using the system’s three most popular lines due to an onslaught of issues, MassDOT’s Board of Directors approved transferring $200.8 million to the MBTA – $180.8 million for physical infrastructure improvements and the remaining $20 million for workforce and safety initiatives.

The pool of money is the first allocation the MBTA has received from the Millionaire’s Tax, or what officials refer to as the Fair Share Amendment.

Bay State voters in November 2022 approved a 4% surtax on incomes above $1 million annually, with the revenue dedicated to improving education and transportation.

Gov. Maura Healey left intact a plan Beacon Hill lawmakers approved in the fiscal year 2024 budget to spend $477 million of the expected $1 billion in revenue from the Millionaires Tax on transportation needs, including the MBTA and preserving highway bridge infrastructure.

Last month, Healey’s administration handed out $100 million in “Fair Share” dollars to the state’s 351 cities and towns Friday for transportation upgrades, with Boston raking in more than $5 million.

Healey has said her administration was “going to make sure that Fair Share revenue was used to improve transportation and education for our communities, as the voters intended.”

Among the $180.8 million for infrastructure improvements across the MBTA, $70 million will be going toward station and accessibility upgrades, $50 million for bridge repair, rehab and replacement, $30 million for track authorization and signal improvements on subway lines, and $20 million for commuter rail projects.

The remaining $10.8 million is earmarked for the design of a project that looks to connect the Red and Blue lines by extending the Blue Line’s current terminus at Bowdoin station through a tunnel under Cambridge Street to the Charles/MGH Red Line station.

Officials will use $20 million to address concerns raised in a safety management inspection plan that the Federal Transit Administration issued in 2022, detailing a poor safety culture at the MBTA that has resulted in overworked staff, aging infrastructure, and an inability to effectively balance daily operational needs with completing capital projects.

Some of the $20 million will also go toward hiring and retention initiatives. The MBTA hired 1,480 new employees and promoted 511 others last year, boosting its workforce by 10%, officials said during an agency board meeting last week.