BRIDGE ASSEMBLY, SUCCESSIVE BAY METHOD
All bridge personnel must wear approved life jackets
while on the bridge. Failure to comply may result in
injury or death to personnel.
Exercise caution when walking near centerline of
roadway; the ponton alignment lugs project above the
roadway surface on interior bays and constitute a
tripping hazard. Failure to comply may result in injury
Assembly of a bridge by successive bays is accomplished
by the consecutive addition of bays along bridge
centerline. A ramp bay and interior bays are connected
and anchored at opposite river banks, and additional
interior bays are connected until distance between them
is met. The final connection, completing the bridge, is
made by loosening anchorage at river banks and pulling
the far shore and near shore end spans together using a
grip hoist. When the body of water to be spanned
contains obstacles, has rapidly flowing water (over
6 feet/sec (1.8 meters/sec)), or much floating debris, the
successive bay method is the most effective. This
method of deployment depends on environmental
factors that are determined in the site layout prior to
a. Launch all BEBs.
b. Launch two interior bays and one ramp bay (WP 0024 00, WP 0025 00,
WP 0026 00, or WP 0027 00).
c. Secure and connect two interior bays (WP 0029 00 and WP 0032 00).
d. Connect ramp bay to interior bay (WP 0030 00 or WP 0031 00).
In some cases, depending on the far shore conditions, it
may be necessary to deploy two additional interior bays
and assemble a five bay raft. This raft can be used to
transport two transporters to the far end shore to be
used for anchorage.
Refer to figure 1, Bridge Assembly by Successive Bay
Method, prior to performing steps e and f.
e. Anchor far shore end span to temporary anchorage, hold-fast, or natural
deadman along bridge centerline (CL) (WP 0035 00).
It may be necessary to leave one BEB connected to help
with grounding far shore end span.
f. Untie BEBs from end span and have them return to launch site.