The subgrade and subbase factor

This photo depicts U.S. 30, sections 11 and 11A, in Lancaster County, Pa., after reconstruction and widening. The smooth-riding pavement averages 26.41 inches per mile (zero blanking band on a profilograph). The paving contractor and the Pennsylvania DOT received an award from the American Concrete Pavement Association in the Divided Highways–Urban category.

State Highway K-150 in Marion County, Kan., is shown after reconstruction. The contractor received incentives for pavement smoothness, concrete strength, and uniform thickness. The project received an award from the American Concrete Pavement Association in the State Roads category.

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