Published in 1972
During the 1970 construction season, the Basic Construction Company of Newport News, laid a 9-inch bituminous concrete base course in a single lift directly on an unimproved subgrade on a section of Route 31 just southwest of Williamsburg, as specified by the Virginia Department of Highways. This construction technique, which had been used in many other areas but was new in Virginia, was attempted to determine its advantages and disadvantages. The purpose of this report is to summarize only the construction and materials features of the project.
Last updated: February 8, 2024