InterCounty Connector (ICC / MD200), InterCounty Connector (ICC / MD200), Maryland State Highway Administration, 2003 to 2015
ESDA Principal Daniel O’Leary was the lead water resources engineer for this $2.5 billion, eighteen-mile-long six-lane divided highway, which intersects with three major highways and crosses numerous streams, wetlands and floodplains.
Dan developed Draft and Final Environmental Impact Statements leading to the Federal Highway’s Record of Decision in 2006, and then oversaw concept design and permitting, design/build procurement, and design/build construction of environmental stewardship projects costing $25 million. His work encompassed reforestation, stream restoration, enabling fish passage, creating and enhancing wetlands. Dan put into place an array of compensatory mitigation and environmental stewardship elements, such as bioswales and other neighborhood drainage retrofits as well as approximately 300 state-of-the-art stormwater management interventions, which included miles of water quality ditches, storm drains and cross culverts.