A physical model study of the effect of surcharge width on the behavior of geosynthetic-reinforced soil GRS walls was carried out. Surcharges up to 100 kPa with three different widths were ap-plied to the top of GRS walls, strip loadings of 0.6 m and 1.2 m width, and also to the entire surface, start-ing from the back of the face. The walls were well instrumented to measure the reinforcement load, the block facing lateral movement and the settlements. The results show that the maximum reinforcement load, lateral displacement of the facing and settlements were affected significantly by the width of the sur-charge. Moreover, a decrease in the surcharges width led to both the locations of the maximum load in re-inforcements and settlements near the facing.
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