A bridge is a Layer Two Device that connects end-devices (i.e. workstations, server, printer, etc.) or other intermediary device like wireless access-point, router, switch, or hub. Bridge’s function is the same with what switch does where it learns MAC Address, Filter/Forward MAC Address, and store it in a MAC table. But bridge forward data slower than switch does because bridge is software-based when it comes to forwarding data unlike switch which is hardware-based.
Every port of the bridge is a single collision domain where it gives its client a dedicated bandwidth and it function in a full-duplex mode. Bridge is still up in the market but not much used especially for large companies.
Image below shows what a bridge looks like: