How much does it cost to deal with the side of my tree facing the road is brown and dying?

The tree work is small: deadwood pruning of the dieback, priced by crown size and access, and roadside work may require traffic control as its own line item. The bigger drivers are diagnostic and soil-side. A soil test for soluble salts and sodium is inexpensive and is the only way to separate salt from drought scorch, dog urine, or root injury — skipping it is how people buy the wrong treatment three years running. Leaching costs water and time, or a service visit with a tank. Soil amendment and compaction relief price by area. And if you are replanting, the real cost is the species choice: putting a sugar maple back in the same spot buys you this same bill again.