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There are 27 routes assigned to the "A" zone of the California Route Marker Program, which designates county routes in California. The "A" zone includes county highways in Lassen, Plumas, Shasta, Siskiyou, and Tehama counties.
|Length||35.30 mi (56.81 km)|
|Existed||1963 (southern portion); 1983 (northern portion)–present|
County Route A1, more commonly known as Route of the Olympic Torch, is a 35.3-mile (56.8 km) county route in Lassen County, California.
This route still exists as a bypass from Susanville for north–south motorists, but it is no longer signed as such. The entire route is in Lassen County.
|||0.0||0.0||SR 36||Southern terminus|
|||14.2||22.9||Gallatin Road||Former northern terminus|
|Spaulding||27.1||43.6||Spaulding||Only access to town|
|||35.3||56.8||SR 139||Northern terminus|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
|Length||11.41 mi (18.36 km)|
|Length||8.45 mi (13.60 km)|
County Route A3 or Standish–Buntingville Road is a road in Lassen County connected to U.S. Route 395, and functions as a bypass for northbound traffic around Susanville. At its northern end it is signed for Reno (via US 395), and its southern end for Lakeview, also via US 395.
This route still serves as bypass for north/south 395 motorists, but is no longer signed as such.
|Length||14.27 mi (22.97 km)|
|Length||15.60 mi (25.11 km)|
|Length||4.96 mi (7.98 km)|
|Length||13.53 mi (21.77 km)|
|Length||30.27 mi (48.71 km)|
|Length||15.19 mi (24.45 km)|
County Route A10 is a 15.19-mile (24.4 km) long county road in Siskiyou County near Mount Shasta. Known locally as "Everett Memorial Highway," it runs from Ski Village Drive in the town of Mount Shasta City to a dead end at the 8,000-foot (2,400 m) level on 14,162-foot (4,317 m) Mount Shasta.
The highway, completed in 1958 at a cost of $980,000 and designated in 1959, was originally built to provide access to the Mount Shasta Ski Bowl, which was destroyed by an avalanche in 1978. Today, the highway provides access to Mount Shasta for climbers, skiers, and anyone wanting access to the mountain.
In wintertime, the road is kept open only to the U.S.F.S outpost at the 6,000-foot (1,800 m) level.
|Length||5.16 mi (8.30 km)|
|Length||17.90 mi (28.81 km)|
County Route A12, known locally as the "99-97 cutoff", or more commonly, "the 97 cutoff", is a two-lane rural highway with a length of 17.9 miles (28.8 km). A12 begins in the west at its junction with Old 99 Highway, which was once US 99. Just a few dozen yards to the east, it intersects Interstate 5. Its eastern terminus is at US 97, 12 miles (19 km) north of Weed.
One mile east of the Interstate junction, it passes through the tiny village of Grenada, the only population center of any merit along the route. 7 miles (11 km) further east is the burg Mayten, which consists only of a convenience store, a church, and an elementary school.
The route is heavily used by travellers and truckers southbound on Interstate 5 who wish to use US 97 northbound en route to Klamath Falls and points north. This route saves over 13 miles (21 km) than if the alternative routing via I-5 to Weed, then north on US 97 was used. Hence, the local name "97 cutoff".
The western two-thirds of the route passes through agricultural areas, and is very reminiscent of two-lane farm roads in California's Central Valley. However, the eastern portion is very scenic, passing through an area with towering dark red crags and buttes to the north.
|Length||3.79 mi (6.10 km)|
|Length||5.69 mi (9.16 km)|
|Length||8.35 mi (13.44 km)|
County Route A15 is a road in Plumas County connecting SR 89 and SR 70 in Portola. On its northern end, after passing through the Old Town commercial district of Portola, A15 passes the Western Pacific Railroad Museum.
|Length||38.74 mi (62.35 km)|
County Route A16 or Platina Road is a county route located in Shasta County connecting SR 36 to SR 273 in Redding. Known locally as Ditch Grade Road ;the final 6.5-mile (10.5 km) section before the junction with SR 36 closely follows the contour of hillside as this route was previously used to bring water to the mine at Platina. There is a rock formation some 6.5 miles (10.5 km) from SR 36 known as Old Man Rock or The Lincoln Memorial .
|Length||19.19 mi (30.88 km)|
|Length||8.83 mi (14.21 km)|
|Length||17.40 mi (28.00 km)|
|Length||5.56 mi (8.95 km)|
|Length||22.60 mi (36.37 km)|
County route A21, or Mooney Rd. connects California State Route 147 to California State Route 44 and intersects California State Route 36 along the way.
|Length||4.54 mi (7.31 km)|
|Length||12.81 mi (20.62 km)|
|Length||15.35 mi (24.70 km)|
|Length||4.20 mi (6.76 km)|
This short highway, paired with A26, services Herlong and the Sierra Army Depot.
|Length||3.82 mi (6.15 km)|
This short highway, paired with A25, serves Herlong and the Sierra Army Depot.
|Length||15.02 mi (24.17 km)|
County Route A28 is a two-lane rural highway. A28 begins at CR A12 in Grenada, connecting Grenada with I-5 near Hornbrook via Montague. It is a flat, level route, and for this reason, was the original preferred routing for both US 99 and I-5 through the area. In both instances, the routing was changed because of intense lobbying by officials in Yreka, who decried the fact that the major highway through the county would bypass the county seat. Thus, both highways ended up being built over far more rigorous terrain at a huge cost increase.
A28 serves the aforementioned three towns, as well as numerous homes and ranches along the way.
This section is empty. You can help by adding to it. (May 2017)
- Faigin, Daniel. "County Routes 'A'". California Highways. Retrieved January 29, 2010.
- Google (April 1, 2012). "Overview Map of County Highway A1" (Map). Google Maps. Google. Retrieved April 1, 2012.
- "Archived copy". Archived from the original on May 28, 2010. Retrieved January 29, 2010.CS1 maint: archived copy as title (link)
- California Department of Transportation. "List of Officially Designated County Scenic Highways" (PDF). Sacramento: California Department of Transportation. Retrieved May 13, 2019.