Location: US-89 and Main St, Brigham City Reassurance shield after 91 splits from 89. 89 will parallel I-15 all the way to Southern Utah, occasionally joining it Location: US-89 and SR-315, Box Elder Cty Just before we enter Willard, we’ll approach SR-315, which connects to I-15/I-84 and serves Willard Bay State Park Location: US-89 and … Continue reading U.S. Route 89, US-91/SR-13 to SR-315