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The Improved Ribbon Bridge (IRB) is a modular floating bridge. A complete IRB consists of a ramp bay at each bank and interior bays to complete the bridge. Individual bays may be joined to form a raft for ferrying operations. Each bays is transported in a folded position on a Common Bridge Transporter . The bays unfold automatically in the water when deployed. The IRB mission is to provide a continuous roadway or raft capable of crossing vehicles over nonfordable waterway.
This Comes In the transported folded to be use as a load.
Here is the other part of the IRB: