The compression and creep characteristics of moraine soil are important mechanical properties of geomaterials to be analyzed during the construction process of engineering projects.How-ever,related references about these characteristics through large-size in-situ tests have rarely been re-ported.In this study,in-situ tests of particle size distribution,compression deformation,and compres-sion creep were conducted at the Xingkang Bridge,West Sichuan,China.The results show that the uni-formity coefficient of moraine soil ranges from 12.1 to 183.3,and gradation coefficient ranges from 0.4 to 2.8.The total compression deformations of moraine samples during the conventional compression deformation test are 4.70,4.07,and 0.47 mm,and their residual deformations are 2.81,2.45,and 0.22 mm,respectively.The deformation modulus ranges from 127.3 to 676.4 MPa,and elastic modulus rang-es from 316.3 to 765.7 MPa.During compression creep tests,moraine soil enters the steady creep stage after 3.8 h of loading pressure at 445 kPa,and it keeps steady after 14 h of loading pressure at 900 kPa.The Burgers model and generalized Kelvin model predict the deformation well in transient,decelera-tion and steady creep stages.Results provide a valuable reference for the analysis of the compression deformation and creep behavior of moraine soil during engineering construction and management.