Why did we build the Grapevine Highway in 1915, California.?

Question

Why did we build the Grapevine Highway in 1915, California.?

Answer 1

It resulted in a quicker more direct way to Central California.  

Answer 2

The highway traced the path already there used by the Native Americans to traverse the mountain range to the Central Valley.

Answer 3

It's a lot quicker than walking.

Actually, you are referring to the "Ridge Route". The Ridge Route, officially the Castaic-Tejon Route, is a narrow two-lane highway that runs from Castaic to Grapevine. Opened in 1915 and paved with concrete from 1917 to 1921, the road was the first paved highway directly linking the Los Angeles Basin with the San Joaquin Valley over the Tejon Pass and the rugged ridge south of Gorman; it was particularly used to travel from the city of Los Angeles to and beyond Bakersfield. Most of the road was bypassed in 1933 by the Ridge Route Alternate (then U.S. Route 99), which has since been upgraded to a modern freeway (Interstate 5).

Answer 4

Dunno