Phase I Engineering

We are fully adept in all aspects of preliminary engineering and environmental studies with a proven track record of meeting complex project development schedules and implementing effective public/stakeholder involvement programs.


CBBEL provides Preliminary Engineering and Environmental Studies (i.e., Phase I Engineering) to municipalities, counties, IDOT, and the Illinois Tollway for projects ranging from non-complex intersection improvements and bike path projects to highly complex roadway realignment and new expressway projects. Phase I Engineering studies are multi-disciplinary efforts that frequently require the completion of detailed studies on traffic performance, safety, noise, socio-economic and environmental impacts, structural design, drainage improvements and roadway/bike path design and alternatives analysis. Additional considerations can include public/stakeholder involvement and state/federal/resource agency coordination to secure all required approvals before subsequent phases of project development can proceed. CBBEL staff has expertise within each of these discipline areas and a proven track record of completing all required discipline studies and accomplishing the overall established Phase I project schedule. 


A well-crafted and successfully implemented public/stakeholder involvement program ensures important and meaningful input as part of key project development milestones and confirms a context-sensitive project design.  CBBEL has in-house expertise and a proven track record for successfully implementing Context Sensitive Solutions (CSS) public involvement best practices on many projects and is used by IDOT to assist other engineering firms with implementing CSS procedures. 


Service List


Advisory Group Facilitation

Categorical Exclusions (CE I and II)

Environmental Assessments (EA)

Environmental Impact Statements (EIS)

Feasibility Studies

Geographic Information System (GIS)

Public Meetings and Hearings

Roadway/Highway and Multi-Use Path Planning and Design