The existence of an easement in real property acquired or reserved by a municipal corporation, a railroad corporation or other transportation corporation, shall not be deemed an encumbrance upon such real property under any law relating to investments in mortgages upon real property by corporations, trustees, executors, administrators, guardians or other persons holding trust funds, but the effect of such an easement upon the real property which it affects, shall be taken into consideration in determining the value thereof.
New York Legal Code