Of the 684 miles, 620 miles of major streets fall within the top three priorities and are broken down as follows:

1st Priority - 331 Miles
2nd Priority - 121 Miles
3rd Priority - 168 Miles
Total - 620 Miles

In addition, there are major roads, located in the city that are the responsibility of Michigan Department of Transportation and Wayne County. In these cases, these respective agencies are responsible for clearing snow from their streets.

The Michigan Department of Transportation maintains 51 miles of state trunk lines within the city of Detroit. For example, the State of Michigan is responsible for Michigan, Woodward, and Grand River avenues.

The Wayne County Road Commission maintains roads within the city limits, in addition to all freeways and certain surface state trunk lines, such as Telegraph Road and Eight Mile Road.

These roads comprise approximately an additional 159 miles of major traffic arteries. Approximately 84 miles of this total are under the jurisdiction of the Wayne County Road Commission and the remaining 75 miles are maintained under a contract with the Michigan Department of Transportation.

The Michigan Department of Transportation (MDOT) is responsible for:

• Jefferson Avenue from M-10/Griswold to I-375
• Randolph from the Windsor Tunnel to Gratiot
• Woodward Avenue from Adams to the City limits
• Grand River Avenue from Cass Ave to City limits
• Gratiot from Randolph to Eight Mile
• Fort Street from Griswold to City limits
• Clark Street from Fort to Fisher Freeway
• Van Dyke from Gratiot to Eight Mile Road
• Gunston from Gratiot to McNichols
• Hoover from McNichols to Groesbeck
• Groesbeck from Hoover to Eight Mile Road
• Michigan Avenue from Cass Avenue to Wyoming