This table shows the highest pass as Sherman Pass Road off the state highway system at ', followed by Onyx Summit on Route 38 at ' and Dawson's Saddle on Route 2 at 7,' 8 and 12 on the list above.
Note that most of California's areas above 10, feet have been protected as designated wilderness, which is largely why the state has fewer roads above 10, feet than Colorado despite having a similar amount of terrain at that elevation. Related to summits is the issue of slopes. Alas, there is no information available as to which segment of which highway has the steepest slope. However, finding the answer is difficult. Specific grade and slope stats are difficult to find except in a more general way.
Cantrans does have a Route Segment Report, but this only indicates if a stretch of terrain is level, rolling, or mountainous. However, the report doesn't provide sufficient information for one to be able to manually rank the routes from highest to lowest.
One useful resource for finding the steepest slopes is Database of Hardest Cycling Climbs in the World. Consider that the slopes on freeways and most expressways is limited due to truck traffic. In the state system, the steepest slopes will be on the more rural roads that permit cyclists. Those roads will show up on this map, and it will show the grade of the route. Casitas Pass Route , a 7. A discussion in September on misc.
Larry Scholnick went through the Caltrans Bridge Log, and identified the following tunnels:. This list is incomplete, however, for it omits the tunnel under the LAX runways on Route 1 as a tunnel; it is listed as Airport Viaduct. Under construction is the Devil's Slide tunnel on Route 1. There is also a tunnel on former US 40 at Newcastle in the Sierra foothills, which is now a county maintained route.
Similarly, the tunnel on pre Route 7 Sepulveda Blvd. There is also debate as to whether all of these are truly tunnels. Maintained by: Daniel P. This is a floating closed javascript menu. California Highways: www. US : miles. Route : miles. I- 5 : miles. Route 65 : miles. Route 49 : miles.
I- 15 : miles. Route 99 : miles. Route 33 : miles. Route : 0. Route : 1 mile. County Sign Route J16 : County Sign Route G16 : County Sign Route J1 : County Sign Route J14 : County Sign Route S2 : County Sign Route S22 : County Sign Route G14 : County Sign Route E21 : County Sign Route J7 : County Sign Route G17 : County Sign Route D6 : 0.
County Sign Route G7 : 3. County Sign Route D7 : 0. County Sign Route S19 : 3. County Sign Route D1 : 2. County Sign Route D4 : 3. County Sign Route J36 : 2. County Sign Route A13 : 3. County Sign Route E19 : 3. County Sign Route E1 : 3. Route : 38 miles unconstructed all of the total route. Route : 61 miles unconstructed all of the total route. I- 5 : rural miles. Route 49 : rural miles. US : rural miles. Route 65 : rural miles.
Route 99 : rural miles. Route 1 : rural miles. The California Highways Site is not affilated with or sponsored by Caltrans, the California Department of Transportation, although I truly appreciate the support that Caltrans staff have provided me in doing research, and the kind words they have sent me regarding the information on this site. I'll be glad to answer any question I can, but this is a hobbyist site.
If you are looking for the current status of a particular state route, try the Caltrans Highway Status page. If you have a maintenance problem to report, use the Caltrans Maintenance Report Form. This section provides information on every state numbered route that was ever defined in California.
This includes the route's current definition, as well as historical information and all known names. This section provides information on the state's County Sign Route systems.
These are the routes on the blue pentagon signs with numbers such as N4 or J7. This section provides the definitions of the various state highway types in California. This section provides information on the different types of Interstate highways, and gives a history in Interstate highway submissions by the state of California.
This section explains how highways are numbered and were numbered in California. It includes information on Interstate, U. This section provides a summary of how the numbers of state highways have changed.
It focuses on two primary areas: the "great renumbering" in when the legislative route numbers were aligned with the signed route numbers, and how the U. Search Search. Business Services Transportation. Login Register. Photo courtesy of Albert Valles, Flickr.
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