• 311 Mapleton Development

Monthly Development Update - December 2021

Buildings have been going up quickly over the past few months - an encouraging, tangible demonstration of the progress occurring on the 311 Mapleton site.


December Milestones

New scopes starting in December are as follows:

  • Start Exterior Skin Activities Building FG – 12/17/21

  • Wood Framing at Building B – 12/2/21

  • Start Building Interiors Building FG – 12/17/21

  • Elevator Installation at Building A – 12/20/21

Construction progress aerial footage | November 2021


Trucking Impacts

  • Masonry Material – Approximately 3 trucks per week*

  • Wood Framing – Approximately 4 trucks per week*

  • Metal Stud Framing – Approximately 3 trucks per week*

  • Roofing Material – Approximately 1 truck per week*

  • Casework – Approximately 1 truck per week*

  • Steel - Approximately 1 trucks per week*

  • MEPF Rough-in Material – Approximately 3 trucks per week*

  • Doors & Windows – Approximately 1 truck per week*

  • Concrete Pour Dates | Approximately 2-10 trucks per day outside of dates noted below:

- Foundation wall pours for Building A-West. The site will see more concrete trucks than average these days but less than a scheduled "large pour" day.

Sequence 1 – 12/9/21*

Sequence 2 – 12/16/21*

Sequence 3 – 12/23/21*


Large slab pour dates that will range from 40 to 80 delivery trucks:

  • No large slab pours are scheduled from 12/1/21-12/30/21. The next large slab pour is scheduled for 1/7/2

Calendar view of construction activities, including estimated truck numbers linked here. Dates are subject to change pending weather/other real-world variables. If dates change, the original will have a strikethrough. The new date will be shown after and updated on the monthly development article + construction calendar. Thus far, changes have been minor in the overall scheme of things, and we'll continue putting our best efforts toward maintaining that goal.


Trucking impacts with the * asterisk are semi-truck-sized vehicles, or considered to be heavy impact deliveries, and are required to use the dedicated Dellwood and Alpine routes through the project's duration. All other vehicles will use the best available public roads. Related truck routing articles:


Construction progress aerial footage | September - November 2021


In Progress Milestones from Previous Month(s)

  • MEPF - 10/4/21

  • Exterior Skin Activities – 10/18/21

  • Wood Framing A/FG – 10/1/21

  • Cold Formed Metal Framing – 10/18/21

  • Structural Steel – 10/1/21

  • Building Interiors – 10/25/21

  • Modular Brick & Stone Veneer - 10/27/21

  • Insulation & Prerock - 11/9/21

  • Roofing - 11/10/21

  • Doors & Windows - 11/11/21