Act 51 Mileage Certification Maps

The mileage certification maps available below are annually submitted to the Michigan Department of Transportation by counties, cities, and villages as required by Public Act 51 of 1951, as amended, to certify the mileages of roads and streets under the jurisdiction of each local agency for use in the distribution of the Michigan transportation fund.

The Michigan Department of Transportation is providing these mileage certification maps via this website as the custodian of the maps. However, the local agencies remain the owners of the maps, and all outside inquiries regarding either the maps or roads shown as being under the jurisdiction of the local agencies should be directed to the appropriate local agency or agencies.

TERMS OF USE: The Michigan Department of Transportation (hereinafter referred to as MDOT) is offering this service to enable the viewing and download of the most recent approved county, city, and village Act 51 mileage certification maps. The maps provided via this site are provided as a public service to the citizens of Michigan and to the internet community and this site serves as a business resource for MDOT and State of Michigan employees. The information available from this website is subject to change on a regular basis, without notice. Every effort is made to provide and maintain useful, accurate, complete, and timely information on this site. HOWEVER, SOME DATA MAY BE INCOMPLETE OR OUTDATED. IN PARTICULAR, BUT WITHOUT LIMITING ITS DISCLAIMER, neither MDOT, the State of Michigan nor any agency thereof, nor any of their employees, make any warranty, express or implied, nor assume any legal liability or responsibility for the QUALITY, CONTENT, COMPLETENESS, SUITABILITY, ADEQUACY, SEQUENCE, ACCURACY, TIMELINESS OR USEFULLNESS of the information, data, maps, and apps represented on this site. MDOT strives for continuous availability of the website for which this site and the data it contains is maintained, however, MDOT will not be responsible in the event the system is down at any point. BY ENTERING THIS WEBSITE AND/OR ACCESSING DATA, I AGREE THAT THE INFORMATION ON THIS WEBSITE MAY BE INACCURATE, it is the sole responsibility of the user to determine the usability of the data for their purposes. In no event shall MDOT have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind arising out of the use of or reliance on the geographic data or metadata. All maps and other material provided herein are protected by copyright.