Authority members said they're hoping that federal funds will be approved for those routes.
Vice President Joe Biden told reporters Wednesday, "California is in the game" in seeking a share of the $8 billion the Obama administration has set aside for rail projects.
Last November, California voters approved $9 billion in bonds for the high-speed line.
If built, it would carry passengers between L.A. and San Francisco in just two hours and 40 minutes.
However, authority members Thursday said planning has not started on the link through California's Central Valley, to create a complete high-speed line between Los Angeles and San Francisco. The officials did say that is the eventual goal.
Capitol Television News Service contributed to this report.