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