The ribbon bridge is the theater's primary assault float bridge.
Additionally, the TBMP provides guidance on the appropriate forward movement of assault float bridges in the forward combat zone and the timely replacement of military bridging in the corps rear areas and communications zone.
One hundred percent of the assault float bridges will be leap-frogged from one river crossing to the next, excluding the additional assets allocated for maintenance and loss or damage.
Assault float bridges must be replaced by support or LOC bridging.
Fundamentally, these planning factors imply that 70 to 90 percent of all assault float bridges are retrieved, replaced by support or LOG bridging, then moved forward to the next crossing site.