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California County Routes in zone G

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. G1 is signed as San Juan Canyon Road for almost the entire length except for a 1/4 mile portion of The Alameda.

From the southern end of G1 on Fremont Peak as San Juan Canyon Road, G1 begins a steep, sharp-curved winding descent from around 3,000 feet for the first 2 miles, north to northeast. G1 then curves to the west for about 2 miles before turning north. At the intersection of Mission Vineyard Road, G1 becomes The Alameda, which then heads north for approximately 1/4 mile before reaching the northern terminus at State Route 156. Beyond the northern terminus, The Alameda continues into downtown San Juan Bautista for 0.2 miles until the intersection of First Street.

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.


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