梁桥经过拓宽改建，形成了新、老梁体拼接的组合桥。
When girder bridge is widened, a combined bridge is formed consisting of both new and old girders.
目前桥梁拓宽改建中常用的纵缝处理方式有新旧桥梁之间设置纵向断缝、翼缘板刚性连接或铰接。
Setting longitudinal break gaps between the new and the old Bridges and rigid or hinge connected the flange slabs are the usual disposal methods in widen and rebuild Bridges.
通途路原设计荷载为汽-超20、挂车-100，要拓宽、改建成设计荷载为城-A级。
When being widened and rebuilded, the designing load of Tongtu road was changed from former load(Truck-Load over 20 and trailer 100)to be class city-A.
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