Sea-level rise planning, mental-health services and road repairs are a few of the highlights in the county’s 2017–2018 budget. The Board of Supervisors adopted the $555 million budget last week, the second year of a two-year budget that Supervisor Dennis Rodoni called “a relatively conservative budget that’s balanced and well managed.” It’s a 2.6 percent increase from last year, and includes five one-time expenses worth $5.5 million: $3 million for repairing roads damaged by the…