Primary State Highway 7 (Washington)
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| Primary State Highway 7 |
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| North Central Highway | |||||||||||||
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| Existed: | 1937 – 1964 | ||||||||||||
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| West end: |  PSH 3 in Ellensburg |
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| East end: |  US 10 in Davenport |
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Primary State Highway 7, the North Central Highway, was a highway in the state of Washington, U.S.A., from 1937 to 1964. The main (trunk) route of the highway extended from Ellensburg in the west to Davenport in the east.
PSH 7 was originally established as the North Central Highway in 1915,[1] and designated Primary State Highway 7 by the state legislature when it created the primary and secondary state highways systems in 1937. Beginning at a junction with PSH 3 in Ellensburg, PSH 7 followed the routing of U.S. Route 10 (later Interstate 90) across the Columbia River at Vantage, then parted ways and headed due north into Quincy. Turning east, PSH 7 followed a meandering course through Ephrata, Soap Lake, and Odessa before ending at a junction with US 2/PSH 2 and PSH 22 in Davenport.
Highways in Washington were renumbered in 1964. Today, PSH 7 between Ellensburg and George is part of I-90; between George and Quincy, SR 281; and between Quincy and Davenport, part of SR 28.
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[edit] Branches
PSH 7 had two unnamed primary branches. One was a 20-mile spur route connecting the PSH 7 trunk route at Soap Lake to PSR 2 (U.S. Route 2) at Coulee City. Today, this branch is part of SR 17. A second branch, was built in the 1950s to create a more direct route between George and Ephrata, bypassing Quincy. Today, this branch is SR 283.
PSH 7 had three secondary branches; see secondary state highways as branches of Primary State Highway 7.
