[raven28690]

including the ones that are near the state line, there are a bunch in state aswell.
UNLESS, they have changed since my road atlas is a 2002 publication.

my 02 atlas is showing weigh stations closer in state at
Banning I-10
Temecula I-15
South of San Clemente on I-5
Cajon Junction I-15
East of Fullerton and Anaheim on 91
Carson I-405
West of Thousand Oaks on 101
Santa Clarita I-5
Tehacapi on 58
South of Wheeler Ridge I-5
Then even more as you get up around San jose and I opted not to list all of those.

Cali is one of those states that had scales scattered all inside the state unlike others whereas you just had them mostly near the state line as you had mentioned.
One of the reasons I knew this is because I have never had so much problems with scale houses in other states as I did with Cali (Cali scale house put my truck out of service one time) so it's been etched into the back of my mind LOL

But like I mentioned, some of those scales may have closed or moved since my trucker atlas was published in 2002 and I stopped driving OTR around that year.