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The product lists on this page provide sources of materials that have been qualified by the Maryland Department of Transportation State Highway Administration (MDOT SHA) for use on State projects. This page is a reference for source of supply approval and does not imply that materials may be used on MDOT SHA projects without normal Quality Assurance (QA) testing and procedures.
Each list item was submitted, tested and approved. Approval procedures are posted with each material category. Contact MDOT SHA for any additional information.
When a product is approved or updates/corrections are made, an updated copy of the qualified list is posted online. Refer to the date at the bottom-right of the list for the most recent update.
Please direct any questions concerning each list to the appropriate product manager. See the related material category Product Qualification Procedure for contact information.
For Federally funded projects advertised after November 10, 2022, certificates of compliance with the Build America, Buy America Act will be required from product manufacturers or producers for all iron, steel, and construction materials.
Traffic Barrier End Treatment Field Guide
The field guide provides detailed information on each of the Approved End Treatment products on MDOT SHA’s Qualified Product List for this asset.
Chris Diaczok, Hanover Operations
Since December 31, 2019, MDOT SHA has been using MASH 2016-compliant devices for new permanent installations and maintenance replacements on National Highway System (NHS) routes. Exceptions may apply when one of the following occurs:
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David Malburg, Division Chief
Phone: 443-572-5298 Toll Free: 866-926-8501 Fax: 410-787-0461
Vicki Stewart, Division Chief
Phone: 443-572-5134 Toll Free: 866-926-8501
Rebeccah Smith, Assistant Division Chief
Phone: 443-572-5112 Toll Free: 866-926-8501 Fax: 410-787-0482
Dr. Intikhab Haider, Division Chief
Phone: 443-572-5055 Toll Free: 866-926-8501 Fax: 410-787-0464Email:
Eric Waltman, Office of Traffic and Safety
Phone: 410-787-5878 Toll Free: 888-963-0307 Fax: 410-582-9469
Timothy Briner, Transportation Design Engineer
Phone: 410-545-8409 Toll Free: 888-375-1084 Fax: 410-209-5002
Contact our Office of Structures (OOS) about approval of noise barrier systems.
Randy Knieriem, Structures Engineering Division
Phone: 410-545-8360 Toll Free: 888-375-1084 Fax: 410-209-5002
Contact our Office of Structures (OOS) about approval of retaining walls.
David Rosen, Team Leader, Precast/Prestressed Concrete, Office of Materials Technology (OMT)
Phone: 410-375-4424 Toll Free: 866-926-8501 Fax: 410-787-8324
Contact our Office of Materials Technology (OMT) for certification inspections of Precast Noise Barrier System plants.
We're available on the following channels.