Is it possible to use a broken tooth as abument for a bridge?

Yes, a broken tooth can be used as an abutment for a bridge in most instances, as long as the tooth ( your second premolar) is not completely non-restorable or broken beyond repair. Another alternative to replace your missing lower first molar would be to to consider placing a dental implant. The advantage of a dental implant versus a bridge is that we do not require to use the adjacent teeth as abutments. Hope this answers your question. 

Teeth with large fillings are often used for bridge
abutments, as long as they are in good condition. I would see an oral surgeon
for a dental implant consultation before deciding, however. Dental implants are
much more conservative than large bridges. If part of a large bridge ever
fails, the entire bridge must be replaced, if an implant fails, you only
replace the implant.

Dental bridges, whether metal, porcelain, or a combination, require solid teeth on each side of a missing tooth to act as an anchor.  If one tooth isn't "perfect" then one option is to "double abut" or have 2 teeth act as one anchor.  The fee for this may make a dental implant a cheaper alternative, and perhaps a better choice.