All of M-1 north of I-75 is listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

The entire length of the expressway is listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

M-54 between I-75 in Grand Blanc Township and M-57 near Clio has been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

This connection is listed on the National Highway System, a network of roadways important to the country's economy, defense, and mobility.

The section of M-150 between M-59 and Auburn Road is listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

M-183 has not been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

M-51 between US 12 and the state line has been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.

The section between the south end and US 31, M-120 has been listed on the National Highway System, a network of roads important to the nation's economy, defense, and mobility.

Segments of it have been listed on the National Highway System (NHS), a network of roads important to the nation's economy, defense, and mobility.

All of M-44 to this point is listed on the National Highway System, a network of roadways important to the nation's economy, defense, and mobility.