A bit of salt won’t harm myrtle but if it is right next to the road and the plowed snow piles up on it all winter, it will likely not make it. Here’s a site that lists salt tolerant many od which we’ll have later in spring. Make sure that the plant you choose is hardy in zone 5 or lower for our area. http://www.bloomindesigns.com/category/wholesale_2public.salt_tolerant/