Ruckus Bridges Creating Network Loop

Please see attached diagram. We had 3 pairs of Ruckus 7731 Wireless Bridges installed to connect 3 separate physical buildings on our campus. The idea, was that this would create some redundancy. If any one bridge pair experienced a failure, connectivity would remain intact.

What we are running into, is that when we physically connect Ruckus Bridge IP 10.0.1.2 to Dell Switch 10.0.0.95, a loop occurs. Immediately physically disconnecting the Ruckus Bridge from the Dell Switch resolves the issue.

Prior to physically connecting Ruckus Bridge IP 10.0.1.2 to the Dell Switch 10.0.0.9, all Bridges are on the network. Since Ruckus Bridge 10.0.1.2 is paired with10.0.1.1 on another switch, connectivity exists.

Thoughts or ideas on configuring this with automatic failover in mind? I can disable the LAN port on any one of the Ruckus Bridges. That's fine, but doesn't accomplish the "automatic failover" aspect we are trying to achieve.

Looking forward to the responses and ideas for improvement to this design. Thanks in advance!