Maryland Department of Transportation State Highway Administration

(D3) District 3 Office

9300 Kenilworth Avenue
Greenbelt, MD 20770
Prince George's County
Phone:301-513-7300 or
800-749-0737
FAX:301-513-7415
[email] [map/direction] (PDF)

District 3​ Maintenance Shops

(30) Gaithersburg Shop
502 Quince Orchard Road
Gaithersburg, MD 20878
Montgomery County
Phone: 301-948-2477
888-795-0013
FAX:301-948-8714
[map/direction] (PDF)

(32) Fairland Shop
12020 Plum Orchard Road
Silver Spring, MD 20904
Montgomery County
Phone: 301-572-5166
888-252-9580
FAX:301-572-5212
[map/direction] (PDF)

(33) Laurel Shop
400 Second Street
Laurel, MD 20707
Prince George's County
Phone: 301-776-7619
800-785-2602
FAX:301-317-5624
[map/direction] (PDF)

(34) Marlboro Shop
6500 S.E. Crain Highway
Upper Marlboro, MD 20870
Prince George's County
Phone: 301-952-0555
888-795-0012
FAX:301-952-1657
[map/direction] (PDF)

District 3 Press Releases

Oct272026

State Highway Administration to Host Public Informational Workshop on Pedestrian Safety Initiatives Along MD 704 (Martin Luther King Jr. Highway) in Prince George’s County

MD 704 Corridor Identified for Safety Improvements in Statewide Pedestrian Safety Plan
Oct212026

Maryland Celebrates Completion of State’s First Pedestrian Safety Action Plan Project on MD 650 (New Hampshire Avenue)

Delivery of Prince George’s County Project, Advancement of Montgomery County Portion Highlight Moore-Miller Administration’s Commitment to Safety
Oct152026

***UPDATED TRAFFIC ALERT*** STATE HIGHWAY ADMINISTRATION TO CLOSE AND DETOUR THE INNER LOOP OF I-495 RAMP TO MD 650 (NEW HAMPSHIRE AVENUE) IN MONTGOMERY COUNTY

Motorists Should Expect Nighttime Detours Starting Monday, October 19
Oct12026

State Highway Administration Begins Bicycle-Pedestrian Project on MD 390 (16th Street) in Montgomery County

Motorists Can Expect Single-Lane Closure Starting Next Week
Sep32026

​**TRAFFIC ALERT**STATE HIGHWAY ADMINISTRATION TO BEGIN REMOVAL OF TEMPORARY BUS LANES ALONG MD 355 (WISCONSIN AVENUE) IN MONTGOMERY COUNTY

Lanes Will Open to All Vehicle Traffic on Labor Day
Aug112026

State Highway Administration Implements Traffic Shift As MD 4 At Suitland Parkway Interchange Enters Next Phase of Construction

Motorists Urged to Put Safety First During Two-Year Traffic Shift
Jul292026

***TRAFFIC ALERT*** State Highway Administration to Complete Resurfacing Ramps on I-95/I-495 at Woodrow Wilson Bridge in Prince George's County

Drivers Should Plan Extra Nighttime Travel Time During Work
Jun242026

State Highway Administration to Improve Pavement Along I-495/I-95 (Capital Beltway) in Prince George's County Starting Next Week

Motorists Can Expect Multiple Lane Closures During Overnight Hours
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