Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Arkansas Highway 90 (AR 90 and Hwy. 90) is an east west state highway in northeast Arkansas. The route of 81.93 miles (131.85 km) runs from Main Street in Ravenden to Route 84 at the Missouri state line.The route is an entirely undivided surface highway that passes through rich cotton country.AR 90 begins at Main Street in Ravenden and heads north to cross US 62/US 63/US 412. The route winds to Pocahontas where it meets AR 115 and US 62/US 67/AR 166. US 67/AR 90 run together south to Shannon. AR 90 then turns east to meet AR 231 and AR 34 in O'Kean. The route runs diagonally northeast until meeting AR 135 east of Knobel.