The I-15 reconstruction project in Salt Lake City, Utah, involves the widening and rebuilding
of 27 km of urban Interstate on alluvial and lacustrine deposits. In some locales, these soils
have low shear strength and require up to 2 to 3 years to complete primary consolidation
settlement. The aggressive 4-year construction schedule required much of the embankment
and foundation work to be completed in the first 12 to 18 months, including the time required
to complete primary settlement. To meet these rigorous schedule constraints, the …