Last Driven June 2018 MP: Old Oregon Trail Hwy #6/216.52 Location: I-84 and S Market Rd, Umatilla Cty Reassurance shield after unposted Route 331, a cutoff road for westbound traffic to Milton-Freewater/Walla Walla. Most unposted roads do not deserve to be posted, but I think ODOT would be well served to post this road as … Continue reading Interstate 84, OR 331 to OR 244