During {HEAD ~ loading} of {TAIL ~ the bridge} by traffic, an operational load may be applied to the first component 
of
During { HEAD ~ loading } of { TAIL ~ the bridge } by traffic , an operational load may be applied to the first component
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH