Do you know if I can cross by CBX from Tijuana to San Diego with a TN visa? I understood that you could not go from Tijuana to San Diego with a tourist visa, but I don't know if you can go using a TN visa.

Yes, the TN visa is accepted as long as both the visa and passport are valid

I do not think so

As far as I understand from the cbx, it is only an access to the United States for people who arrive by plane at the airport directly to Tijuana without a Tijuana entrance and the cbx bridge connects to the United States and as far as I know people with any type of Visa only traveling from Mexico by plane disembarking directly in San Diego or in another place in Los Angeles or in another part of the United States are allowed to enter with a visa for the rest of the people who enter by land, so to speak, the cbx Tijuana or any other Mexico border with the United States can not enter with a visa only for citizens and residents But instead If they travel directly from Mexico to any airport within the United States they are allowed to travel with a visa

I don't know, but I can find out.