The Division of Transportation Engineering (DTE) is responsible for planning, engineering, and constructing Montgomery County's infrastructure to the highest safety and performance standards possible while paying close attention to citizen's input, environmental and economic concerns.
When dialing outside of the county, call 240-777-0311 or submit via their website.
For website comments or to report website problems or broken links, please email us. This email address does not handle service requests or complaints.
Transportation Engineering · Montgomery County Department of Transportation
100 Edison Park Drive · Gaithersburg, MD 20879 · email@example.com
· telephone: 240-777-7220· fax: 240-777-7277 ·