Grossman & Keith Engineering Company | 10408 Greenbriar Place | Oklahoma City, OK 73159

Phone 405-691-3213 | Fax 405-691-3214 | Email:

Grossman & Keith Engineering

Grossman & Keith Engineering Company has been responsible for the Oklahoma Department of Transportation Superload Bridge Studies for over 9 years. We strive to make our part of the process as orderly and timely as possible, and we always aim to submit accurate approvals to the Department of Public Safety based on the most current highway information we have available.

Superload Bridge Studies



Superload Bridge Studies



About Us

As of November 1, 2011 the process for obtaining an Oklahoma Permit has changed. The new process is explained here. You can start the application process by going to or by calling 1-877-425-2390. You will no longer contact us. All applications will be submitted to DPS. They will direct the applications appropriately from there.