Wynn Resorts is proposing lending a hand to Boston's creaky transit system.

The Las Vegas casino giant wants to pay the state transit authority about $7.36 million over 15 years to make improvements to the Orange Line subway that will pass near the Everett property Wynn wants to develop into a $1.7 billion waterfront resort casino.

The proposal is included in the casino's latest environmental filing with the state as it seeks a critical environmental approval to break ground on the project.

The state's transportation authorities said in a joint statement that the payments will allow for increased subway service during peak times and help the aged system absorb additional riders from the casino development.

Wynn says it would be the first time a private developer subsidized Boston's subway operations.