High-quality pavement is an essential element of Southeast Michigan's transportation system. All road users — from people traveling in their own car to bus riders, bicyclists, and freight haulers — depend on quality pavement for a safe, predictable trip. All pavement deteriorates over time and use. Extending pavement life depends on consistent monitoring and using fixes that are appropriate to the age and condition of the pavement. SEMCOG, in partnership with the Michigan Department of Transportation, counties, cities, and other local governments collects pavement condition data every year. This condition data is then used to develop plans that improve the region’s pavement through an asset-management-based approach to preserve and improve the road infrastructure.

SEMCOG uses the Pavement Surface Evaluation and Rating (PASER) system to rate roads in the region. Road condition data is collected in the summer and fall, and then made available in January. The pavement database contains a historical record of road conditions, number of lanes, and surface type of roads. SEMCOG and its partners use the data to track changing road conditions, develop policies, and prioritize projects for maintaining roads.

Road condition data is available upon request in several formats:

  • Shapefile
  • Roadsoft
  • Maps

SEMCOG also works with local agencies to help them develop asset management plans for roads under their jurisdiction. The state’s Transportation Asset Management Council has created a guide for local agencies (pdf, 1.0MB) in Michigan, templates for developing asset management plans (pdf, 1.5MB) for roads and bridges, and guidelines for developing an asset management process and plan.

Southeast Michigan Pavement Condition Map

Pavement map


Developing Regional Solutions
SEMCOG is a regional planning partnership of governmental units serving 4.7 million people in the seven-county region of Southeast Michigan striving to enhance the region's quality of life.