The utility model provides a tied arch pontoon bridge and bridge construction relates to civil engineering technical field. The tied arch pontoon bridge includes floating structure, hoisting structureand hunch end bearing, hoisting structure set up in floating structure's top, and can be right floating structure hoists, hoisting structure encircles main part, a plurality of stull, a plurality ofperpendicular jib and a plurality of tie rod including at least two, each the both ends of encircleing the main part respectively with end bearing fixed connection encircles, adjacent two encircle through a plurality of between the main part the stull is connected, it is a plurality of the top of perpendicular jib all with encircle the main part and connect, the bottom all with floating structureconnects, the pole body of tie rod with install corresponding in the main part each encircle perpendicular jib is connected, the rod end of tie rod is with corresponding main part fixed connection encircles. The utility model discloses simple structure makes things convenient for the dismouting.