Nationwide Interlock has over 40 conveniently placed locations throughout Michigan and Minnesota. We are known for our affordability and excellent customer service!  See what separates Nationwide Interlock from other providers! 

Why choose us? 

Monday-Friday, 9:00am-5:00pm

Saturday & Sunday, by appointment only 

Toll-Free : 866-694-6099

Michigan Headquarters

2175 Stephenson Hwy

Troy, MI 48083

Minnesota Headquarters

12225 Wood Lake Drive

Burnsville, MN 55337​