Boulder Office

The Third Flatiron, Boulder
The Third Flatiron, Boulder

Representative Boulder Projects

112th Ave. Widening Improvements, Colorado to RTD "N-Line", Cities of Thornton and Northglenn
136th Ave. Widening Improvements, Cherry to Holly, City of Thornton
144th Ave. Improvements, Colorado to York (City of Thornton)
1800 38th Street, Boulder
20th Street Multi-Modal Improvements Design, 50th to 59th Avenues, Greeley
29th Street Retail (redevelopment of Crossroads Mall)
29th Street Stormwater Pump Station Design, City of Pueblo
58th Ave. Improvements, Washington to York Streets, Adams County
63rd St. Waterline and Irrigation Improvements
800 28th Street Student Housing
9Seventy 28th Street Student Apartments
Amgen Manufacturing Facilities
Apres Ski Way / Village Dr. Intersection Improvements, Steamboat Springs
Berthoud Pass Widening and Improvements Staking
Boulder Arapahoe Road Recycling Center
Boulder Community Hospital Foothills Campus, surveys, infrastructure design, and floodplain
Boulder County 2013 Great Flood FEMA CDBG-Disaster Relief Program Homeowner Bridge Replacement Designs
Boulder County 63rd Street Recycling Center
Boulder County Alaska Ave. Facilities Flood Damage Mitigation Engineering
Boulder County Fairgrounds multiple projects, Longmont
Boulder County Fire Offices, Boulder
Boulder County Jail (original campus + all major expansions)
Boulder County Longhorn Vehicle Maintenance Shops
Boulder Housing Partners Headquarters
Boulder IBM Plant Site Infrastructure Surveying and Construction Staking
Brighton 2016 Transportation Master Plan (w/Charlier)
Broadway Drainage Improvements, 52nd to 58th Avenues, Adams County
Brodie Avenue Improvements Design, Community Dr. to Fish Creek Rd., Estes Park
Camp George West Infrastructure Master Plan and Improvement Plans, Golden (State of Colorado)
Canyon Point Subdivision, Golden
Clear Creek Trail Repairs Design (Adams County Parks and Open Space)
Clear Lake Dam Surveying (Guanella Pass), Georgetown
Coors Technology Center, Golden
Dakota Ridge Subdivision
Downtown Westminster (redevelopment of Westminster Mall-infrastructure + many of the development parcels)
East Boulder Recreation and Aquatics Center
Erie Waterline Improvements
Fairview High School Expansion + Improvements
Flatiron Crossing Mall Surveying and Village Redevelopment Engineering, Broomfield
Greenway Park Subdivision, Broomfield
Harmony Town Centre, Fort Collins
Harrison Avenue Levee
Highlands Ranch (multiple projects incl. Filing 112A)
Interlocken Business Park (935-acres), Broomfield
Lafayette Library
Lafayette Police and Court Building
Lafayette Recreation and Aquatics Center
Lafayette YMCA and Sports Field Complex
Landmark Lofts Student Housing
McCaslin Boulevard Surveying and Design, US 36 to SH 128 (original design)
National Renewable Energy Laboratories (over 50 projects), Golden
Niwot Hills, Boulder
Parker Recreation and Aquatics Center
Park Ridge Subdivision, Longmont
Parkway Circle Transit Oriented Development, Broomfield
Peak to Peak Charter School, Lafayette
Pearl East Business Park
Pearl Street Mall
Peloton Condominiums
Prospect New Town, Longmont (1st New Urbanism project in Colorado)
RTD West Rail Line Control Surveys, Denver to Golden
Renaissance Subdivision (most filings), Longmont
Rueter Hess Reservoir Surveys, Parker
S. Platte River Interceptor-Sewer Interconnect, Brighton
S. Platte River Trail and Bridges, 108th to 120th (UD&FCD / Adams County)
Spring Gulch Trail and SH 119 Pedestrian Underpass, City of Longmont
StorageTek / Conoco Phillips / Bancroft Capital Surveys and Engineering, Louisville
Thornton Carpenter Recreation and Aquatics Center
UCAR Multi-Use Path and SH 157 Underpass
Sheridan Blvd / SH 95 Underpass at 89th Ave., City of Westminster / RTD / CDOT
Sheridan Blvd / SH 95 Widening and Safety Improvements, Turnpike Dr. to 92nd, City of Westminster
Tantra PUD (original), Boulder
US 287 / Berthoud Bypass Construction Staking
University of Colorado at Boulder (over 75 projects)
Valmont / Pearl Parkway Bridges Hydraulics and Floodplain (over Boulder and S. Boulder Creeks)
Vista Lofts Student Apartments, University of Denver
Washington St. Improvements, 52nd to 58th (Adams County)
Willoughby Corner, Lafayette (Boulder County Housing Authority)
Wonderland Creek Trail and Floodplain Improvements
Woodgate Road Improvements Design, City of Montrose
York St. Improvements, SH 224 to 78th (Adams County)

Office Profile

Boulder is our headquarters and where Drexel Barrell began in 1949.

Home to the University of Colorado, the National Center for Atmospheric Research, the National Institute of Standards and Technology, IBM, and Google, Boulder is known for its highly educated workforce, outdoor recreational amenities, and quality of life.

We have engineered and surveyed projects for the City of Boulder, Boulder County, the University of Colorado, the University Center for Atmospheric Research (UCAR), the National Renewable Energy Laboratories (and its predecessor the Solar Energy Research Institute), Steamboat Springs and the Steamboat Springs Ski resort, virtually every community and county in Colorado, and projects for thousands of public and private sector clients throughout Colorado


Boulder Office

Drexel Barrell's Boulder offices are located near 38th and Arapahoe at

1800 38th Street, Boulder, CO 80301
(303) 442-4338


Boulder Contacts

Michael D. Middleton, P.E., Managing Principal

William K. Wright, PLS, Managing Principal

Mathew E. Selders, PLS, Principal

29th Street, Boulder
Pearl Street Mall, Boulder
Boulder Community Hospital
S. Platte River Trail, 108th-120th, Adams County / UDFCD
Valmont Bike Park, Boulder
Folsom Field, CU-Boulder
Williams Village North Residence Hall, CU-Boulder
Apres Ski Way-Village Dr Intersection + Drainage Improvements, Steamboat Springs
9Seventy 28th Street, Boulder
Bear Creek Student Apartments, CU-Boulder