TM-5-5420-203-14

TM 5-5420-203-14

g. Transport of the AVLB system (Class 60/Class 70 Bridges) for Air, Rail, Sea and Highway

Mode of Transportation

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AVLB system, it is desirable that the AVLB system (launcher and bridge) be shipped as one unit (bridge

in transport mode on the launcher).

With respect to the bridge envelope, the Class 70 bridge is

approximately 700 lbs heavier and 3.5 inches wider than the Class 60 bridge; their physical configurations

appear to be nearly the same, only that the class 70 bridge is made of four quarter-sections, while the

class 60 bridge is made of eight panels.

Both bridges fold the same at the center hinges into their

scissored transport mode aboard the launcher.

NOTE

With the bridge mounted in the transport mode on its launcher, there is a height restriction

problem (approximately 13 feet), which would obstruct crew visibility when navigating a

barge (landing craft) from its bridge. In this case, it would be desirable to ship the launcher

and bridge in two separate units.

Both the Class 60 and Class 70 bridges will have a total

of eight lift points mounted along the outboard side; of the bridge girders that can be easily

attached to for lift of the folded bridge by a crane at dockside. The crane could lift the bridge

from the hold of a ship, set it on the ground in folded configuration, and the launcher could roll

out and proceed to retrieve the bridge for transport by the unit.

(d) Highway. For highway transport, it is preferred that the whole scissored bridge (Class 60 or

Class 70) be shipped as an (OVERSIZE WIDE LOAD) by either commercial or military vehicles. The

overall maximum heights of the scissored bridge loaded on a semitrailer (lowbed or flatbed) are

approximately 13 feet and 12 feet, respectively. Shipping the whole bridge intact saves on disassembly

and re-assembly time and work. The bridge can be launched onto these trailers by its launcher or lifted

onto the trailers by use of a crane or two forklifts as explained above. The transport of the wide load

requires escort vehicles and the appropriate state highway permits

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