Development Update: Week of Jan. 21, 2019

January 18th, 2019

Marriott International Headquarters

Week of January 21, 2019:

Excavation and hauling are underway at the development site and will continue for the next several months. Blasting of the bedrock will likely commence in March. Similar to the blasting of the nearby Purple Line station in December, we do not anticipate much noise or disruption. Nighttime construction activities are scheduled from February 1 to August 1, 2019, Monday through Friday, from 6:00 p.m. to 5:00 a.m. This work will include upgrading the storm water, sanitary and water lines surrounding the site along Woodmont, Norfolk and Wisconsin Avenues. The work performed during these nighttime hours will not include noisier activities such as jackhammering, street sawing, etc. The Development Team will share a timeline indicating the phases of these activities prior to their commencement.

The sidewalk and curb lane along Wisconsin Avenue remain closed to facilitate these activities. Additional lane and sidewalk closures remain in place along sections of Woodmont, Norfolk and Wisconsin Avenues (view map of all closures here). Pedestrians will be detoured to the east sidewalk of Wisconsin Avenue during work hours and should take advantage of nearby crosswalks as needed. Please be vigilant and pay close attention to signage as it may change occasionally. Pedestrians should also be cautious as they move around the site, especially during this winter season as accumulations of snow and ice may cause slippery conditions.

We anticipate these closures to remain for an extended period of time until project completion. During this time, we ask for your patience throughout this process, we thank you for your understanding, and we apologize for any inconvenience this may cause you. Our number one priority is pedestrian safety in and around the construction site.


Monthly construction updates

The developers and general contractor hold monthly construction updates for the general public. These updates are generally scheduled for the first Tuesday of each month and take place in downtown Bethesda at the Montgomery County Regional Service Center, on the second floor in rooms A and B, located at 4805 Edgemoor Lane, Bethesda, MD 20814.

The next update will take place February 5, 2019 at 6:00 p.m.


Call our Development Hotline

Nearby residents, businesses, commuters, and other interested parties seeking reliable information about the progress of the Marriott International headquarters development site may call our Marriott HQ Development Update Hotline. In addition to the information already available from the MHQBethesda.comwebsite and development update e-blasts, now you can call and leave a voicemail for the development team.

To leave us a message, call (240) 514-7831.


Watch live construction time-lapse

You can see a live construction camera featuring a 24/7 time-lapse view of the development site.

View camera »


For questions, contact Barney Silver, Vice President, Construction at Boston Properties; or Gavin McDuff, Area Superintendent at Hensel Phelps. Please send your email to or call (240) 514-7831 to leave a voicemail message.