Development Update: Week of Mar. 11, 2019

March 8th, 2019

Marriott International Headquarters

Week of March 8, 2019:

For the next several months, mass excavation and hauling continue at the construction site. Intermittent blasting of the bedrock will commence in March, with concrete pouring operations likely commencing in May.

Nighttime underground utility improvements and restoration work continue along Woodmont Avenue. This work is anticipated to continue through July 2019. During this time, sections of the southbound lane may be closed for utility access, but two-way traffic will be maintained as often as possible with temporary steel road plates in use as needed.

Daytime traffic along Woodmont Avenue is expected to lessen in the coming weeks as the ramp into the construction site is relocated from Woodmont to Wisconsin Avenue. Throughout this time, the approved Montgomery County and State Highway traffic control plans will ensure minimal impact to traffic flow around the site.

We are aware some nearby residents are concerned about the potential impact of this ongoing work, particularly construction noise and the use of work-lights at night. We want to assure those residents that general contractor Hensel Phelps is following the Noise Waiver Certificate issued by the Montgomery County Department of Environmental Protection. However, if you believe they are operating outside of the defined conditions, please let us know.


Sidewalk closures remain in place along sections of Woodmont, Norfolk and Wisconsin Avenues (view map of closures here), and additional temporary closures may be necessary during this time. 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 detours may change occasionally.

The timeline for all upcoming phases of work is estimated in this site plan, including future phases along Wisconsin and Norfolk Avenues. Please note, this plan does not include anticipated work performed by Pepco.



Monthly construction updates

The developers and general contractor hold bimonthly construction updates for the general public. These updates are generally scheduled for the first Tuesday of every other 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 on Tuesday, April 2 at 6:00 p.m. Please note: the previously scheduled meeting in March has been cancelled.


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.