Interstate 84 (I-84) is an Interstate Highway in the northwestern United States. The highway runs from Portland, Oregon, to a junction with I-80 near Echo, Utah. The highway serves and connects Portland, Boise, and Ogden, Utah. With connections to other highways, I-84 connects these cities to points east and also serves as part of a corridor between Seattle and Salt Lake City. The sections running through Oregon and Idaho are also known as the Vietnam Veterans Memorial Highway. The highway originally served as a fork of I-80 to serve the Pacific Northwest, and was originally numbered Interstate 80N. It was generally built along the corridor of U.S. Route 30 (US 30) and US 30S, which themselves largely followed the Oregon Trail; the US 30S designation was decommissioned in the 1970s after the freeway replacement was mostly complete. The highway was signed with the I-84 designation in 1980, when a 1977 change in guidelines took effect that discouraged highway numbers with directional suffixes. The renumbering resulted in two highways being numbered I-84, with the other located in the Northeastern United States. Route description |- | | |- | | |- | | |- |Total | |} Oregon In the Portland metropolitan area, I-84 is sometimes referred to as the "Banfield Freeway" or simply "the Banfield", although the official name is the Banfield Expressway. This freeway is named after Thomas H. "Harry" Banfield (1885–1950), the chairman of the Oregon Transportation Commission from 1943 to 1950. As I-84 heads east, it also follows US 30 in a majority of I-84 from Portland, Oregon, to near Rupert, Idaho, with splits being variant in Oregon and Idaho, but before leaving Portland, there is a junction with I-205, along with cities Gresham, Fairview, Wood Village and Troutdale . Immediately after leaving Troutdale, I-84 and US 30 runs east along the south bank of the Columbia River (and the northern Oregon border, as well) for nearly with the first 80 miles being in the Columbia River Gorge National Scenic Area, running from Troutdale to nearby Biggs Junction, passing through the cities of Hood River and The Dalles in the Scenic Area. It also passes through Biggs Junction, Arlington, and Boardman outside of the Scenic Area before heading southeast to the junction with southern end of I-82 immediately southeast of the Umatilla Chemical Depot near Hermiston. From the junction it continues southeast on to Pendleton. East of Pendleton,