A low-profile-arch long-span corrugated-steel culvert was installed in Pennsylvania as a bridge-replacement structure. The Republic Steel Company maxispan design was used. Instrumentation was installed in the soil and on the structure to monitor performance during construction. Field and laboratory soil property tests were conducted to characterize the soil behavior. Predictions from finite-element computer analyses were compared with the field results. From this and previous research, a number of conclusions were drawn. The choice of soil model had its most significant influence on the culvert deformation and bending-stress predictions. Overburden-dependent and linear-elastic soil models were shown to be unsatisfactory. Effects of construction procedures are difficult to predict accurately. Further study is needed to evaluate the importance of factors such as compaction-induced deformation, soil-culvert interface conditions, culvert wall yielding, and wall buckling. Seam slip rather than bending flexibility is needed to develop positive arching and hence further study is warranted. A particularly important observation was that special features like compaction wings appear to be both unnecessary and undesirable.(Author)