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Foothill Expressway

County Route G1
Location: San Benito County
Length: 5.42 mi (8.72 km)
Existed: 1958–present

County Route G2
Location: Santa Clara County
Length: 9.7 mi (15.6 km)

County Route G3
Location: Santa Clara County
Length: 4.52 mi (7.27 km)
Existed: 1962–present

County Route G4
Location: Santa Clara County
Length: 14.11 mi (22.71 km)
Existed: 1962–present

County Route G5
Location: Santa Clara County
Length: 7.24 mi (11.65 km)
Existed: 1962–present

County Route G6
Location: Santa Clara County
Length: 12.33 mi (19.84 km)
Existed: 1962–present

County Route G7
Location: Santa Clara County
Length: 3.25 mi (5.23 km)
Existed: 1962–present

County Route G8
Location: Santa Clara County
Length: 29.38 mi (47.28 km)
Existed: 1962–present

County Route G9
Location: Santa Clara County
Length: 4.17 mi (6.71 km)
Existed: 1963–present

County Route G10
Location: Santa Clara County
Length: 10.34 mi (16.64 km)
Existed: 1964–present

There are 21 routes assigned to the "G" zone of the California Route Marker Program, which designates county routes in California. The "G" zone includes county highways in Monterey, San Benito, San Luis Obispo, Santa Clara, and Santa Cruz counties.

County Route G1 is a road providing access to Fremont Peak State Park.

County Route G2, more commonly known as Lawrence Expressway and Quito Road, is a busy 9.7-mile (15.6 km) long north–south link through Silicon Valley in Northern California. The majority of G2 is part of the Santa Clara County Expressway System.

G2 runs from the Quito Road overcrossing of SR 85 in Saratoga, north along Quito Road. G2 is not signed along this section and is not commonly recognized as existing along this 2 lane road by either locals or mapmakers. The Quito Road portion is also maintained by the City of Saratoga rather than Santa Clara County.


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