Yeah, makes perfect sense. One tooth isn't enough to fully support the
crown that will go where the missing tooth used to be.

What's the condition of the tooth that doesn't need the root canal
treatment? If it's not in need of a crown itself, I would consider
going for a dental implant, if it was possible.

There are a few advantages to having the implant done instead of the
bridge. The one that I would enjoy most, would be easy of cleaning.
Floss threaders are not fun. Also, if any of the 2 teeth (and 1 fake
tooth) in the bridge develop a problem, the entire thing needs to be
replaced. With the dental implant, each tooth stands alone and can be
fixed individually if new problems arise.

Adenosine

Maybe yes, maybe no. Root canal treated teeth are brittle and on
occasion, break.

Joel