This document discusses a large construction project to install a new water pipeline using horizontal directional drilling. The project involves drilling a 6,572 foot long, 36-inch diameter pipeline 100 feet below the St. Johns River in Jacksonville, Florida on an aggressive schedule. The owner, JEA, chose to use a design-build approach to take advantage of the contractor's early involvement and ensure schedule and cost certainty. Key challenges included navigating two curves in the drill path below the river and coordinating pipe assembly along a busy roadway.