Tecma served as the Prime Consultantproviding Phase III construction engineering services for this $25 Million contract, which was completed in the Spring of 2014. Advance work included installation of temporary HMA pavement, drainage work, tree removal, and construction of detention/retention basins. Mainline work included removal and replacement of the IL 21 bridge over Bull Creek, the construction of several retaining walls, box culvert installation, construction of a new pedestrian underpass, two miles of pavement reconstruction, detention/retention basin construction including installation of wetland sod, water main work, sanitary sewer work, a new closed drainage system, and new traffic signals/lighting. Through their work on the IL 21 project, Tecma staff developed strong, professional working relationships with key project stakeholders including the various IDOT Bureaus, the Lake County Stormwater Management Commission, the Soil & Water Conservation District of Lake County, the LCDOT, the Lake County Forest Preserve District, the Village of Libertyville, Libertyville Township, and area residents/business owners/schools. Tecma personnel successfully managed project specific challenges on this contract including extensive coordination with private utility companies (including North Shore Gas, ComEd, Comcast, and AT&T), extensive coordination with the LCFPD for the construction of a new pedestrian underpass, maintaining safe access for numerous businesses/private residences during the staged construction of both IL 21 and IL 137, and providing remediation for poor soil conditions.