The　ultra-high　performance　concrete　(UHPC)　link　slab　has　been　proposed　to　provide　a　suitable　solution　to　the　cracking　problem　of　conventional　reinforced　concrete　(RC)　link　slab.　This　paper　presents　an　experimental　study　on　the　tension　mechanisms　of　UHPC　link　slab　under　monotonic　tension　loads.　The　experimental　results　of　load-displacement　curves,　crack　development　and　strains　of　UHPC　link　slab　were　investigated　and　compared　with　those　of　RC　link　slab.　It　can　be　found　that　in　the　elastic　phase,　the　tension　stiffness　and　ultimate　loads　of　the　UHPC　link　slab　were　respectively　2.6　and　2.4　times　those　of　the　RC　link　slab.　Compared　with　the　RC　link　slab,　the　number　of　cracks　on　the　top　surface　of　the　UHPC　link　slab　was　larger,　but　the　average　crack　width　was　significantly　smaller.　The　concrete　and　reinforcement　strains　of　UHPC　link　slab　were　smaller　than　those　of　RC　link　slab.　©　IABSE　Congress　Nanjing　2022　-　Bridges　and　Structures:　Connection,　Integration　and　Harmonisation,　Report.　All　rights　reserved.