AMP: La Grande-Baker Hwy #66/32 Location: OR 237 and I-84, North Powder, Union Cty Reassurance shield as Oregon 237 begins and we head out of North Powder. 237 follows the original routing of US-30 from I-84 to Union. AMP: 17 Location: Main St and Oregon St, Union Fifteen miles later, we’ll enter Union. AMP: 17 Location: Main … Continue reading Oregon Route 237, I-84/US-30 to OR 203