California State Route 104

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State Route 104 marker

State Route 104
Route information
Defined by S&HC § 404
Maintained by Caltrans
Length: 36.04 mi[1] (58.00 km)
Major junctions
West end: SR 99 near Galt
East end: SR 49 in Sutter Creek
Highway system
SR 103 I-105

State Route 104 (SR 104) is a west–east state highway in California's Central Valley. It connects State Route 99 near Galt to State Route 49 in Sutter Creek via the city of Ione. It is known as Twin Cities Road from its western terminus up until just before Ione. Heading west past its western terminus along Twin Cities Road will lead to Interstate 5 and eventually to an end at State Route 160 north of Walnut Grove.

Route description[edit]

The route begins in Galt in Sacramento County at SR 99. It then heads eastward, forming the northern boundary of the city of Galt. The route turns northeast, passing through Herald, near Rancho Seco Nuclear Generating Station and on to the community of Clay before entering Amador County. It then continues past Mule Creek State Prison and begins a short overlap with SR 124 in Ione. Afterwards, it exits the town and has another short overlap with SR 88, where it goes through the community of Sunnybrook. Its eastern terminus is at SR 49 in Sutter Creek.[2]

Major intersections[edit]

Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, and do not necessarily reflect current mileage. R reflects a realignment in the route since then.[3] The numbers reset at county lines; the start and end postmiles in each county are given in the county column.

County Location Postmile
[3][4][5]
Destinations Notes
Sacramento
SAC 0.00-17.69
Galt 0.00 CR E13 (Twin Cities Road) – Walnut Grove Continuation beyond SR 99
0.00 SR 99 – Sacramento, Stockton Interchange
Amador
AMA 0.00-10.07
Ione R5.77 SR 124 north (Plymouth Highway) / Shakeley Lane – Plymouth, Placerville West end of SR 124 overlap
R5.96 SR 124 south (Church Street) – Stockton East end of SR 124 overlap
  8.20
7.39[N 1]
SR 88 west / Jackson Valley Road – Stockton West end of SR 88 overlap
  12.68[N 1]
8.39
SR 88 east – Martell, Jackson East end of SR 88 overlap
Sutter Creek 10.07 SR 49 – Sutter Creek, Jackson
10.07 Ridge Road Continuation beyond SR 49
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
  1. ^ a b Indicates that the postmile represents the distance along SR 88 rather than SR 104.

References[edit]

  1. ^ January 1, 2006 California Log of Bridges on State Highways
  2. ^ Thomas Brothers (2008). California Road Atlas (Map).
  3. ^ a b Staff. "State Truck Route List" (XLS file). California Department of Transportation. Retrieved August 21, 2012. 
  4. ^ California Department of Transportation, Log of Bridges on State Highways, July 2007
  5. ^ California Department of Transportation, All Traffic Volumes on CSHS, 2005 and 2006