In certain embodiments, {HEAD ~ a bridge} 110 may be engaged to a foundation 112 by a fixed connection, {TAIL ~ a pinned connection}, a roller connection, or by another connection 
engaged by
In certain embodiments , { HEAD ~ a bridge } 110 may be engaged to a foundation 112 by a fixed connection , { TAIL ~ a pinned connection } , a roller connection , or by another connection
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH