M-58 is maintained by the Michigan Department of Transportation (MDOT) like other state highways in Michigan. As a part of these maintenance responsibilities, the department tracks the volume of traffic that uses the roadways under its jurisdiction. These volumes are expressed using a metric called annual average daily traffic, which is a statistical calculation of the average daily number of vehicles on a segment of roadway. MDOT's surveys in 2009 showed that the highest traffic levels along M-58 were the 28,648 vehicles daily east of the split at Lathrop Avenue; the lowest counts were the 18,827 vehicles per day by the I-675 interchange . All of M-58 has been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.