Project highlights Client challenge In 2015, the Washington D.C. area once again took the top spot for rush hour traffic gridlock in the nation. Add the cost of wasted time and fuel and delayed emergency response times and one begins to see the seriousness of the problem. The Virginia Department of Transportation (VDOT) planned to address these issues by constructing new high-occupancy vehicle and toll lanes for the I-95 and I-495 freeways to the tune of hundreds of millions of dollars, which also included the cost to replace or refurbish aging infrastructure along 44 miles of highway. Before beginning construction, VDOT needed a partner to perform significant preliminary geotechnical investigation. In addition, VDOT’s multi-year court battle with a local municipality that contested the I-

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