Interstate 97
Interstate 97 (I-97) is a part of the Interstate Highway System that runs entirely within Anne Arundel County, Maryland. The intrastate Interstate runs from U.S. Route 50 (US 50) and US 301 in Parole near Annapolis north to I-695 and I-895 in Brooklyn Park near Baltimore. The Interstate is the primary highway between Baltimore and Annapolis. I‑97 connects Annapolis with Baltimore–Washington International Airport and links the northern Anne Arundel County communities of Crownsville, Millersville, Severna Park, Glen Burnie, and Ferndale. It is the shortest primary Interstate Highway.
U.S. Route 97 in Washington
US 410 was replaced by a western extension of US 12 in 1967, when the highway's western terminus was moved to Aberdeen. In 1973, a segment of US 97 between Selah and Ellensburg was realigned east away from the Yakima River and onto I-82, while the former route became SR 821. Between US 97 / US 10, which would later be decommissioned by 1970, near Thorp and US 97 in Virden, there was a SR 131. In 1975, to reduce the SR 10 concurrency, US 97 replaced SR 131 and the old route became SR 10 and SR 970. SR 131 would later be routed on another route in the Randle area in 1991. Within Selah, US 97 was also moved onto I-82 away from the city, so the old route became SR 823 in 1984. Prior to 1987, US 97 ran on the west side of the Columbia River between Wenatchee and Chelan, while SR 151 ran on the east side. US 97 was moved onto SR 151 in 1987 and the old US 97 became US 97 Alternate.