The Taipei-Ilan Expressway is one of the largest public construction projects undertaken by the government in recent years. The 31-kilometer-long expressway starts in Nankang District in Taipei City and runs eastward past Shihting and Pinglin to Toucheng in Ilan County.
北宜高速公路是近年政府重大的公共建設，西起北市南港區，向東通過石碇、坪林，以迄宜蘭縣頭城鎮，全長共三十一公里。