Welcome to Mountain States Construction’s annual ranking of the biggest projects to be completed this calendar year in Colorado, Wyoming, Kansas, Nebraska, North and South Dakota’s, plus a list of new projects that have broken or will break ground in 2010.

1800 Larimer
1800 Larimer

1. 1800 Larimer
$102 million
Westfield Co. Inc
General Contractor: Mortenson Construction
Architect: RNL
Engineers: JF Sato & Associates, JIRSA Hedrick & Associates, Swanson Rink
Among the Subcontractors: Encore Electric, RK Mechanical, Drake Williams Steel, LPR Construction, Four Star Drywall, Harmon Glass, Rocky Mountain Prestress, Otis Elevator, Western States Fire Protection
Start: May 2008 Finish: April 2010

Construction began in May 2008 on 1800 Larimer, Denver’s first office development in 20 years. The 22-story, glass-and-steel, mixed-use office tower offers 500,000 sq ft of Class AA office space. The building’s primary tenant, Xcel Energy, will occupy 350,000 sq ft of the precertified LEED-Platinum CS building.

2. U.S. Dept. of Energy Research Support Facilities
$64 million
Alliance for Sustainable Energy LLC
General Contractor: Haselden Construction LLC
Architect: RNL
Engineers: Martin/Martin Inc., KL&A Inc., Stantec Consulting Inc.
Among the Subcontractors: Trautman & Shreve Inc., Weifi eld Group Contracting, Offi ce Scapes
Start: Feb. 2009 Finish: June 2010

This project creates a 218,000-sq-ft building that will serve as a national showcase to demonstrate how high-performance buildings can be aesthetically compelling and acquired at a competitive first-cost and lifecycle cost. The RSF will be designed to meet LEED-Platinum certification and will also be the first zero-energy building of its kind.

3. Central Park Tower
$42 million
General Contractor: The Weitz Co.
Architect: Gensler
Engineers: Martin/Martin Inc., Richard Weingardt Consultants, Swanson Rink
Among the Subcontractors: Alber Engineering Inc.
Start: Jan. 2009 Finish: June 2010

Central Park Tower, at 11 stories and 305,000 sq ft, is the fourth office building Weitz has built in the Interlocken Business Park. The project is precertified LEED Gold and is the tallest office building in the Highway 36 corridor.

4. Renaissance Uptown Lofts
$11.9 million
Colorado Coalition for the Homeless
General Contractor: Alliance Construction Solutions
Architect: Humphries Poli Architects
Engineers: HCL Engineering & Surveying, Jirsa-Hedrick & Associates, Bel Fay Engineering
Among the Subcontractors: Concrete Frame Associates, Hurst & Burr Mechanical, Douglass Colony Metals
Start: Nov. 2009 Finish: Nov. 2010

This project is a 99,276-sq-ft, five-story podium construction of transitional housing, built for the Colorado Coalition for the Homeless. It will have parking and 8,000 sq ft of retail space on the ground level. The first deck will be a posttensioned slab with four floors of wood framing above.

5. The Mitchell Block
Fort Collins
$11.3 million
Mountain 262 LLC
General Contractor: The Neenan Co.
Architect: The Neenan Co.
Engineers: Northern Engineering, The Neenan Co., Innovative Mechanical, Gregory Electric, Wray Plumbing & Heating
Among the Subcontractors: Oglesby Sherman Design, BHA Design
Start: Sept. 2008 Finish: Feb. 2010

This project builds a 43,500-sq-ft, four-story corporate office building with retail space on main level for a local charitable organization, located in historic Old Town Fort Collins. Also included is a below-grade parking structure.