Civil construction of the Overlake Redmond Technology Center light rail station is expected to wrap up late next year. Civil construction will be followed by construction of the light rail operating systems (power, signals, etc.). The systems work takes about one year, and will be followed by pre-revenue service testing.
Fares are set at $2.25 + $.05 per mile, rounded to the nearest $0.25. Fares may change over time to achieve a minimum Board-required revenue target, but at current rates that would put the ~15-mile trip from Overlake to Westlake at around $3, or Overlake to Northgate at ~$3.50.
Source: Facebook: East Link light rail