Rockdale: I-90 at MP 48.1: Asahel Curtis
Rockdale sits in the Cascade Range of Washington State, where Interstate 90 follows a densely wooded mountain corridor near Snoqualmie Pass. This small unincorporated community lies in the upper Snoqualmie Valley, east of the pass, on the principal road link between Seattle and central Washington. The surrounding slopes belong to the western Cascades, with conifer forest, steep ravines and transport routes shaped by the terrain. The nearby Asahel Curtis Trail is named for Asahel Curtis, a Seattle photographer active in the early 20th century. Rockdale is a useful reference point for understanding both the practical journey across the Cascades and access to the surrounding backcountry.
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Built around a stop on the Milwaukee Road railway, Rockdale grew into a small mountain community on the South Fork Snoqualmie River in Washington’s Cascade Mountains. The settlement lies beside Interstate 90, within the steep, forested corridor leading toward Snoqualmie Pass. Its rail heritage continues on the Palouse to Cascades State Park Trail, which follows the former Milwaukee Road grade through this section of the range. Nearby, the Snoqualmie Tunnel, completed in 1914, carries the route beneath the pass. Rockdale illustrates how rail construction and later highways threaded through this rugged part of King County. Discover other points of interest through webcams located across Washington’s Cascades.
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Washington’s terrain runs from Pacific coastal lowlands in the west to the dry Columbia Plateau in the east, with the Cascade Range creating a marked climatic divide. Central Washington lies on the plateau side of the Cascades, where the Columbia River has cut broad valleys and irrigation supports orchards and vineyards. The state also includes Puget Sound, the intricate marine inlet around Seattle, and the volcanic cone of Mount Rainier. Seattle’s Space Needle, built for the 1962 World’s Fair, remains one of its most recognisable landmarks. Move on to other webcams in the region to compare landscapes and settings around Washington.
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The Atlantic, Pacific and Gulf coasts define much of the United States — their ports, fisheries and trade routes have long tied the country’s economy to the wider world. Between them, the Rocky Mountains, Great Plains and Mississippi River basin form sharply different regions, from high western ranges to broad agricultural heartlands. Cities carry much of the national story: New York’s Statue of Liberty, a gift from France dedicated in 1886, remains an enduring symbol, while Washington, DC concentrates major federal institutions. Indigenous nations have shaped these lands for millennia, and their living cultures remain essential to the country’s identity. Find related webcams in the surrounding areas to build a fuller picture of the United States.
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