Transportation Improvement Program (TIP)

Background

The TIP is a four year schedule of transportation projects selected as priorities for funding by cities, villages, county road commissions, transit agencies, and the Michigan Department of Transportation. The TIP is an implementation tool of the Regional Transportation Plan (RTP). Projects in the FY 2026-2029 TIP must advance the goals and policies adopted in the RTP. There are five Amendment periods per year to process major changes to the TIP, while it is also regularly updated with minor changes referred to as administrative modifications. All projects using federal-aid highway or transit funding must be in the approved Transportation Improvement Program (TIP).

General Program Accounts (GPAs) are groupings of similar routine transportation projects within the TIP as permitted in Federal regulation 23 CFR 450.324 (f) under 23 CFR 771.117(c) and (d) and/or 40 CFR part 93. Projects not required to be programmed as Line-Item projects are programmed under an appropriate GPA by jurisdiction and type, such as Local Road, Trunkline Road, or Transit Capital. When the total cost of all the projects within a GPA equals or exceeds 125% of the GPA’s current federally approved limit, an amendment is required to reflect this change in size.

Amendment periods designated (Full) allow major changes to be made to S/TIP Line-Item projects (projects not under a GPA) for any reason (cost, scope, etc.) and budget adjustments may be made to GPAs to increase total funding available for projects programmed under them.

Amendment periods designated (Cost-Only/GPA) are limited to S/TIP Line-item projects for cost changes of 25% or more, and adjustments to GPAs, when necessary, to increase total funding available for projects programmed under them.

A designation of (Special) refers to any special amendment periods that may be necessary.

RTP/TIP projects are selected by SEMCOG’s Federal-Aid Committees (FAC). FACs are charged with evaluating data and recommending projects that meet regional transportation goals while satisfying local needs. There is an FAC for each of SEMCOG’s seven counties as well as the City of Detroit. These committees are comprised of representatives of local units of government, transit agencies, and MDOT. FACs meet to discuss and approve project recommendations, which are submitted to SEMCOG for inclusion in the 2050 RTP and TIP project list. FAC’s are an essential part of developing and implementing the RTP and TIP.

FY 2026-2029 TIP

The FY 26-29 TIP began on 10/1/2025 and includes a variety of projects designed to address regional transportation policies and priorities – pavement, safety, bridge, operations, transit (capital and operations), capacity, and pedestrian and bike mobility projects. These projects consider regional and statewide transportation performance targets. Additional projects may be submitted to the TIP via future administrative modifications or amendments, see amendment details in the accordion below.

See the 2026 Amendment Calendar and the 2027 Amendment Calendar.

View the Transportation Improvement Program Projects Map