- Snoqualmie Pass (Wikipedia)
Snoqualmie Pass is a mountain pass that carries Interstate 90 (I-90) through the Cascade Range in the U.S. state of Washington. The pass summit is at an elevation of 3,015 feet (919 m), on the county line between Kittitas County and King County.
- Vantage Bridge (Wikipedia)
The Vantage Bridge is a bridge in the U.S. state of Washington. It carries Interstate 90 across the Columbia River, near Vantage and George, Washington. This section of the river is named Wanapum Lake; it is the reservoir formed by Wanapum Dam. The bridge separates the Ginkgo Petrified Forest and Wanapum Recreational Area State Park on the western bank of the Columbia.
- Wild Horse Wind Farm (Wikipedia)
The Wild Horse Wind Farm is a 273-megawatt wind farm that generates energy for Puget Sound Energy that consists of one hundred twenty seven 1.8-megawatt Vestas V80 turbines and twenty two 2.0-megawatt Vestas V80 turbines on a 10,800-acre (4,400 ha) site in Kittitas County, Washington, 17 miles (27 km) east of Ellensburg, Washington. The turbines are placed on the high open Shrub-steppe ridge tops of Whiskey Dick Mountain, which was chosen for its energetic wind resource, remote location, and access to nearby power transmission lines. The towers are 221 feet (67 m) tall, and each blade is 129 feet (39 m) long, with a total rotor diameter of 264 feet (80 m), larger than the wingspan of a Boeing 747. The turbines can begin producing electricity with wind speeds as low as 9 mph (14 km/h) and reach full production at 31 mph (50 km/h). They shut down at sustained wind speeds of 56 mph (90 km/h). The site is also home to one of the largest solar array (500 kW) in Washington.
- Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at 3,021 miles (4,862 km). It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain West, Great Plains, Midwest, and the Northeast, ending in Boston, Massachusetts. The highway serves 13 states and has 16 auxiliary routes, primarily in major cities such as Chicago, Cleveland, Buffalo, and Rochester.