Brierley Associates Corporation

Tunnel design and consulting for underground facilities and heavy civil infrastructure, with expertise in ground behavior, subsurface conditions, and site-specific constraints.

Trenchless design and construction support including horizontal directional drilling (HDD), microtunneling, and other trenchless crossing methods for pipelines, utilities, and infrastructure.

• Horizontal Directional Drilling (HDD)
• Microtunneling

Geo-structural design for underground and below-grade structures including shafts, deep foundations, and excavation support in challenging urban and subsurface environments.

• Shaft Design
• Deep Foundations

Geotechnical investigation, analysis, and design for subsurface construction projects including underground facilities and heavy civil infrastructure.

Engineering services to assess and mitigate land subsidence caused by underground mining and other subsurface voids, including abandoned mine land (AML) programs.

Geotechnical and engineering services for abandoned mine land reclamation, including subsurface investigation and mitigation of mine-related geohazards.

Identification and mitigation of geologic hazards including mine fire response, subsidence, and other subsurface risks.

Construction-phase design services for underground and heavy civil projects, including contractor design support to solve field challenges.

GIS-based solutions for subsidence mitigation programs and underground infrastructure tracking.

Engineering geology including geologic mapping, subsurface investigation, and geologic baseline reporting for underground construction projects.

Specialized blasting design for underground construction in constrained environments, including micro-fracture blasting techniques.