[Jay Chap]

Would I see any benefit in creating a network bridge between my wireless and ethernet adapters as far as LAN transfer rates, or is that more intended for bridging 2 or more connections from separate ISPs?

[Ryujingt3]

A network bridge joins two separate computer networks. The network bridge enables communication between the two networks and provides a way for them to work as a single network. Bridges extend local area networks to cover a larger physical area than the LAN can reach.

So, to answer your question, it won't help you.