follows to its terminus. I-15/I-84 heads south to the cities of the Wasatch Front (Or the Ogden-Clearfield Utah Metropolitan part) passing through several smaller communities and then the west side of Ogden before I-84 separates towards Cheyenne, Wyoming, while I-15 heads to Salt Lake City, I-84 follows the Weber River east. As the freeway gradually ascends through Weber Canyon it also passes through several small farming communities, including Morgan, where the Browning Arms Company headquarters can be seen from the freeway. Also visible in the canyon is Devil's Slide, an unusual rock formation just off the freeway. Farther up the canyon is the Thousand Mile Tree, planted by Union Pacific Railroad workers to mark from the railroad's origin in Omaha, Nebraska. The freeway ends at Echo, a near ghost town that before served as a stopover for the railroad, at a junction with Interstate 80, to Cheyenne, Wyoming, and US 189, to Jackson, Wyoming. Also near the junction are Echo Reservoir and Echo Dam. The Utah sections of I-84 that are not concurrent with Interstate 15 are defined at Utah Code Annotated § 72-4-114(4). History The Portland to Utah corridor was proposed as one of the national "toll superhighways" in a 1939 report by the Bureau of Public Roads. It was formally included in the Interstate Highway System, created in 1956, and was originally proposed to be numbered as Interstate 82; however, it was never signed with this designation, and the Interstate 82 designation was later assigned to a different road that connects Ellensburg, Washington, to Yakima, Washington, the Tri-Cities region, and Hermiston, Oregon. The freeway was assigned the designation of I-80N in the 1958 plan, in part to correspond with US 30. The Portland segment of then-I-80N was proposed to run on the Mount Hood Freeway and a section of I-205. Plans for this were officially dropped in 1974 after a successful freeway revolt. The American Association of State Highway and Transportation Officials established guidelines recommending that "suffixed" highways, such as I-80N, be renumbered. In 1977, Idaho officials recommended that I-80N be renumbered to I-84. The motion was seconded by officials in Utah (who initially proposed this as I-82), but opposed by Oregon and Washington. The motion passed on July 7, 1977, and the states were given until July 1, 1980, to implement a coordinated renumbering strategy. After renumbering, I-84 violated the Interstate Highway Numbering Convention by being south