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Highway Program & Non-Capital Uses


Public Act 51 of 1951 (Act 51) mandates how transportation funds are distributed and spent between MDOT and local entities. The intent of Act 51 is to distribute approximately 25 percent of federal aid to local jurisdictions for use on federal-aid eligible roads, with MDOT remaining responsible for ensuring federal regulations are followed and funds are managed appropriately. MDOT complies with this provision in an oversight role at various points throughout a project, while local agencies are responsible for planning scoping, and design, as well as testing and construction engineering services. Local agencies ultimately deliver more than 500 federal-aid projects annually with an average project cost of $500,000.

MDOT allocates pavement preservation funding by formula to its seven regions between the Road Improvements and Rebuilding, Non-Freeway Resurfacing, and Freeway Resurfacing programs. The formula is updated annually with current pavement condition, average daily traffic, regional costs, and eligible lane miles.

For the Bridge program, funding is distributed to MDOT regions through a bridge preservation allocation formula that uses the deck area of bridges in each National Bridge Inventory (NBI) condition. Funding is split into investment targets for replacement, repair, and preventive maintenance work.

The table below displays the investment strategy for FY 2023-2027 for the Highway Capital Program at $11.8 billion. This total reflects investments for pre-building activity (i.e., scoping, design, environmental clearance, and right of way (ROW) acquisition) and building activities.

2023-2027 Highway Program Investment, Including Routine Maintenance (in millions)

Investment table showing the 2023-2027 Highway Program Investment, Including Routine Maintenance (in millions).

This level of investment will provide Michigan travelers with approximately 1,111 miles of improved roads per year over the next five years, extending the life of approximately 790 miles of pavement each year through the capital preventive maintenance (CPM) program and 322 miles per year with non-freeway resurfacing. MDOT also will manage its bridge assets with repairs to 175 bridges per year.