Washington State Route 7 - Route Description

Route Description

State Route 7 (SR 7) begins at an intersection with U.S. Route 12 (US 12), a major east–west highway, in Morton. Traveling north as Second Street and paralleling the Morton – Tacoma (Mountain Division) route of Tacoma Rail, the street intersects Main Avenue, which continues west out of the city as SR 508. After leaving Morton, the highway becomes the Mountain Highway and passes through a heavily forested canyon near Mount Rainier and parallel to the Tilton River and Roundrop Creek. Bridging the Nisqually River, the highway leaves Lewis County and enters Pierce County. In Elbe, the roadway intersects SR 706, which goes east to Mount Rainier National Park. Following the Nisqually River, which has become Alder Lake, and Tacoma Rail line, SR 161 branches off towards Eatonville and SR 702 travels west from the plains to McKenna.

Passing Elk Plain and suburban areas, the highway enters Spanaway near the Fort Lewis boundary where SR 7 intersects SR 507, which continues southwest to Chehalis. The Mountain Highway becomes Pacific Avenue and enters Parkland. Shortly after 112th Street, the roadway has a partial cloverleaf interchange with SR 512, which uses 108th Street South as two ramps. Leaving Parkland and entering Tacoma, Pacific Avenue turns east as 38th Street and then has another partial cloverleaf interchange with a short freeway and the proposed route of SR 7, which is used by the roadway. The freeway was the busiest segment of the highway in 2007, with an estimated daily average of 27,000 motorists. The median of the freeway is the Tacoma Rail route and at the northern terminus is an interchange with Interstate 5 (I-5). SR 7 ends at the interchange, located near the Tacoma Dome, but continues north parallel to the railroad to a single-point urban interchange with SR 509 as I-705.

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