Champlain Hudson Power Express Trenchless Crossings
Power Generation
Trenchless crossings for the Champlain Hudson Power Express; won Project-of-the-Year award.
View project sourceDirectory
Public engineering firm profile
Brierley Associates Corporation
Englewood, CO
Creating Space Underground
- Services
- 15
- Offices
- 20
- Projects
- 4
- Leaders
- 6
Overview
Brierley Associates Corporation is a specialty geotechnical and underground engineering firm focused exclusively on tunneling, trenchless construction, geostructural engineering, and subsurface-related services. Operating under the mission 'Creating Space Underground,' it delivers geotechnical and structural design and consulting to owner, A/E firm, and contractor clients across North America, combining deep knowledge of subsurface conditions, ground behavior, and site constraints with practical constructability expertise. It qualifies as a U.S. Small Business Administration small business under NAICS 541330. Brierley maintains more than 20 regional offices from California to Massachusetts and is consistently ranked among the top 50 trenchless engineering firms in North America.
Services
Tunneling Engineering
Tunnel design and consulting for underground facilities and heavy civil infrastructure, with expertise in ground behavior, subsurface conditions, and site-specific constraints.
Trenchless Engineering
Trenchless design and construction support including horizontal directional drilling (HDD), microtunneling, and other trenchless crossing methods for pipelines, utilities, and infrastructure.
Geostructural Engineering
Geo-structural design for underground and below-grade structures including shafts, deep foundations, and excavation support in challenging urban and subsurface environments.
Advanced Geotechnical Design
Geotechnical investigation, analysis, and design for subsurface construction projects including underground facilities and heavy civil infrastructure.
Subsidence Mitigation
Engineering services to assess and mitigate land subsidence caused by underground mining and other subsurface voids, including abandoned mine land (AML) programs.
Mine Reclamation Engineering
Geotechnical and engineering services for abandoned mine land reclamation, including subsurface investigation and mitigation of mine-related geohazards.
Geohazards Assessment
Identification and mitigation of geologic hazards including mine fire response, subsidence, and other subsurface risks.
Construction Design and Support
Construction-phase design services for underground and heavy civil projects, including contractor design support to solve field challenges.
Geographic Information Science (GIS)
GIS-based solutions for subsidence mitigation programs and underground infrastructure tracking.
Geological Services
Engineering geology including geologic mapping, subsurface investigation, and geologic baseline reporting for underground construction projects.
Blasting Design
Specialized blasting design for underground construction in constrained environments, including micro-fracture blasting techniques.
Industries
Firm type
Projects
I-35W Stormwater Storage Facility
Minneapolis, MN | Stormwater & Flood Control
Underground stormwater storage facility featured in ASCE Magazine; addresses Minneapolis flooding.
View project sourceJames River Trenchless Crossing
2024 | Garney Construction | Water Supply
Record-breaking trenchless crossing of the James River completed by Garney Construction.
View project sourceMinnesota Microtunneling Shaft Project
2026 | Minnesota | Water Supply
Novel approach to shaft design for a microtunneling project in Minnesota; subject of InDepth article.
View project sourceCredentials and affiliations
Awards
Top 50 Trenchless Firms (Trenchless Technology Magazine, multiple years)ACEC Engineering Excellence Award - Iowa Honor Award (Ottumwa River HDD Crossing, 2023)Trenchless Project of the Year - RappahannockENR Best Small Project - Empire State Trail TunnelTunnel Achievement Award - Jefferson Barracks Tunnel (2024)OSMRE Award - CR 297 Subsidence ProjectProject of the Year - Champlain Hudson Power Express Trenchless Crossings
Leadership
Arthur "AJ" McGinn
Chief Executive Officer
PhD, PE
Eric Lindquist
President, Chairman of the Board
PhD, PE
Dave Sackett
Chief Operations Officer
CPG, PG
Vickie Watkins
Chief Financial Officer
Charles Luxford
Director of Engineering
PE, SE, PEng
Jon "Ike" Isaacson
Director of Geological Services
GE, CEG, PE, PG
Offices
Denver Metro (Corporate Office)
HeadquartersMoraga
Encino
Tampa
Honolulu
Aurora
Chicago
Overland Park
Boston (Cambridge)
Brighton
Minneapolis/St. Paul (Cottage Grove)
8617 West Point Douglas Road South, Suite 240
Cottage Grove, MN 55016