Yes, that's it. 73rd Avenue crosses MacArthur Boulevard where Foothill Boulevard joins MacArthur from the north. After this intersection proceed east on 73rd, turn right onto Sunkist Drive (there might still be a small doughnut shop there, Quality Doughnuts), and then you're at Edwards Avenue, where there is an onramp for I-580.
I know this because my parents used to take this route from I-580 to the Oakland Airport. They stopped, of course.
That sounds like the route I took by mistake going to the airport, I followed a sign that took me off the Freeway too soon and had to drive clear across Oakland at 11 at night to find the airport I had never been to in my life, I was terrified.. blond hair stood out like a sore thumb in that part of town late at night.