Michigan/Major roads/Main

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County Highways versus County Roads

  • Michigan has an "intercounty" highway system in addition to locally maintained county roads. In both cases, naming conventions should follow highway naming by state.
    • Numbered county highways are prefixed with A through H based on geography. Naming convention should be "CR-[Letter Prefix][#]" (i.e. "CR-D19"). In all cases, local signage should be used to designate a primary name, while the county highway designation could be an alternate name if appropriate. While these roads could conceivably be classified higher, the lowest road type used should be Minor Highway regardless of appearance or functional classification.
    • A small number of counties maintain numbered county roads that are not part of the statewide A-H highway system. These roads should be named CR-[#] (i.e. "CR-388") and would typically appear as Primary Street, Street, or even Dirt Road.

Alleys

As a general rule in Michigan, only residential alleys should be mapped, and only if they are the locally accepted destination for parking at or near a residence. Alleys should only function as a starting point or final destination, not as a thoroughfare. If alleys are mapped, the road type should be set to "Parking Lot Road" and given the name "Alley". Other attributes (city, direction, turn restrictions) should be set as if the alley were any other drivable road.

When adding or editing an alley, an important consideration is to verify that house numbers are properly situated for the surrounding street segments. Waze will route to the closest segment for a set of destination coordinates. This may result in the destination being in the alley, which may or may not be the desired result. Refer to the FAQ for additional information. If you need guidance or are uncertain whether a certain alley would meet the criteria to be mapped, please post a permalink in this existing Michigan forum thread.