Rail-cum-road　truss　bridges　are　rapidly　developing,　and　frequent　cracking　in　freshly　poured　deck　concrete　is　of　great　concern.　For　the　performance　of　such　a　load-bearing　deck,　it　is　necessary　to　understand　its　stress　status　due　to　short-term　shrinkage.　Taking　a　newly-constructed　rail-cum-road　truss　bridge　as　the　case　project,　this　paper,　by　ANSYS　finite　element　simulation,　mainly　analyzed　the　stress　distribution　in　deck　concrete　under　short-term　action　of　shrinkage.　Shrinkage　of　one　deck　panel　and　two　companion　specimens　shortly　after　the　concrete　pouring　was　measured　through　in-situ　testing.　It　was　found　that　the　free　shrinkage　of　companion　specimens　at　40　days　is　140~150　micro　strains,　significantly　higher　than　that　indicated　by　the　current　code.　Under　the　action　of　short-term　shrinkage,　tensile　shrinkage　stress　in　the　magnitude　of　1,5~3,5　MPa　is　present　in　the　deck,　triggering　potential　cracking,　and　its　effect　shall　therefore　not　be　neglected.　©　IABSE　Congress　Nanjing　2022　-　Bridges　and　Structures:　Connection,　Integration　and　Harmonisation,　Report.　All　rights　reserved.