Introduction The FY 2006-2008 Statewide Transportation Improvement Program (STIP) is a three-year program of highway and transit projects developed to fulfill the requirements set forth in the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) and its successor the Transportation Equity Act for the 21st Century (TEA-21). The FY 2006-2008 STIP totals $11 billion with $4.9 billion for highway improvements and $6.1 billion for transit capital improvements and operating assistance. The FY 2006-2011 Proposed Improvement Programs for highways and public transportation, published by the Illinois Department of Transportation, have been utilized in developing this STIP document and serves as the focus for public review and comment. View the FY 2006-2008 Statewide Transportation Improvement Program Download the FY 2006-2008 Statewide Transportation Improvement Program Adobe Reader is required. Download a free copy of Reader..