 As population pressures expanded south from Minneapolis and Bloomington, the completion of Interstate 35W and 35E brought about major construction in the post-World War II period, turning villages into cities within 20 years.Burnsville, Apple Valley, Eagan, and Lakeville brought over 200,000 people into the county by the end of the century.The Western and Northern Service Centers were constructed in the early 1990s each with an additional courthouse location.