Construction of a highway on a sanitary landfill and its long-term performance : Burlingame, M J Trans Res Rec N1031, 1985, P34–40

Abstract

The short- and long-term (4-5 yr) settlements of the Interstate 85 roadway in New Jersey, which was constructed on a sanitary landfill, are presented in this paper. Published, long-term settlement behavior of other structures constructed on refuse landfills are also presented for comparison. Stabilization of the landfill was accomplished by placing a pad of granular fill between the landfill and proposed pavement and then surcharging. Measured short- and long-term settlements are compared to those calculated from formulas developed on the basis of the behavior of sanitary landfill materials elsewhere. These equations were used to make conservative predictions of the measured settlements. Stabilization of the landfill with a heavier surcharge than is minimally required appeared to greatly reduce long-term settlements. A recent visual inspection of the roadway showed that it had no structural damage and little observable differential settlement.