Some branches of my evergreens are brown but only started happening this year

First photo is tall evergreen with no branches trimmed. Next 2 are different low growing evergreens with dead branches removed.
This only occurred with front yard evergreens, the backyard ones are fine.
We hired a snow and salting service this last winter and they salted a lot. We also just hired them for lawn service starting last summer.
I only see this browning on bushes next to where they salted.