<b><a href="https://en.wikipedia.org/wiki/Newhall_Pass#Beale's_Cut" class="extiw" title="en:Newhall Pass">Beale's Cut</a></b> at Fremont's Pass in 1872, improving the <a href="https://en.wikipedia.org/wiki/Category:El_Camino_Viejo" class="extiw" title="en:Category:El Camino Viejo">El Camino Viejo</a> route by cutting through the northeastern <a href="//commons.wikimedia.org/wiki/Category:Santa_Susana_Mountains" title="Category:Santa Susana Mountains">Santa Susana Mountains</a>, in Southern California. 
<ul><li>Replaced later by the Newhall Tunnel (1910), and <a href="https://en.wikipedia.org/wiki/Newhall_Pass_interchange" class="extiw" title="w:Newhall Pass interchange">Newhall Pass interchange</a> (1970s) in the northernmost San Fernando Valley.</li>
<li>Note: Beale's Cut was not actually part of the 1920s <a href="//commons.wikimedia.org/wiki/Category:Ridge_Route" title="Category:Ridge Route">Ridge Route</a>, and was just to the south.</li></ul>
unknown, comes from the <a rel="nofollow" class="external text" href="http://www.scvleon.com/signal/lw092596.htm">A.B. Perkins collection</a>
<a rel="nofollow" class="external free" href="http://www.scvhistory.com/scvhistory/ap0625.htm">http://www.scvhistory.com/scvhistory/ap0625.htm</a>