Delivering innovative engineering solutions that rise to the challenges and complexities of critical infrastructure projects
Reliance Engineers LLC is an infrastructure engineering consultancy headquartered in Wellesley, Massachusetts, with additional offices in Michigan and Toronto. The practice delivers specialized services across bridge and structural engineering, tunnel and underground construction, geostructural engineering, geotechnical engineering, cost estimation and project controls, and owner advisory services. Its engineers have delivered work on major transit, highway, and port infrastructure projects including the MBTA Green Line Extension, I-95 New Haven Harbor Crossing, and Conley Terminal Backland Development.
Planning, analysis, and design of bridge and structural systems for transportation infrastructure. Covers complex long-span bridges (cable-stayed, arch, segmental, truss) and short- to medium-span solutions (precast girder, steel plate girder, box-girder). Services address roadway and railway bridges, reinforced and prestressed concrete, structural steel, steel-composite systems, fixed and movable spans, curved and skewed alignments, phased construction, and staged loading. Analysis uses advanced tools and 3D modeling; design conforms to AASHTO, AREMA, and regional standards.
Structural and geotechnical support for tunnel and underground construction projects, including temporary and permanent shoring systems and subterranean infrastructure.
Highly specialized geostructural services tailored to infrastructure and subterranean construction, including temporary shoring design, permanent shoring and underpinning, and soil-structure interaction for deep excavation projects.
Comprehensive geotechnical services tailored to the demands of infrastructure development, deep foundation systems, and complex ground behavior, backed by rigorous analysis and site-specific evaluations.
Robust site investigation programs to assess soil, rock, and groundwater properties, establishing a detailed understanding of subsurface conditions before project initiation.
Includes SPT, CPT, pressuremeter, dilatometer, and permeability testing.
Testing for strength, compressibility, and hydraulic properties.
Surveys and correlation with boring data.
Development of detailed baseline and interpretive reports.
Design recommendations for shallow and deep foundations, tailored to project-specific load demands and subsurface conditions.
Evaluation for spread footings and mats.
Analysis for short- and long-term performance.
Advanced slope stability analyses to support cut slopes, embankments, and natural terrain stabilization.
Modeling using limit equilibrium and finite element methods.
Improvement and staged construction sequencing.
Groundwater management and modeling strategies essential in all phases of geotechnical design.
Modeling using finite element tools.
Estimation and control for excavations.
Design of cut-off walls, relief wells, and drainage systems.
Dewatering design and monitoring.
Geotechnical input and analysis supporting the performance of permanent and temporary retaining systems.
Active, passive, and at-rest earth pressure calculations.
Modeling for walls and foundations.
Evaluating influence of surcharge loads and adjacent structures.
Assessments for adjacent buildings and utilities.
Instrumentation programs integrated into geotechnical designs to monitor performance and validate design assumptions.
Design and specification of programs using inclinometers, piezometers, strain gauges, and extensometers.
Protocols and response recommendations.
Third-party peer reviews and independent geotechnical assessments to ensure technical rigor, optimize design performance, and reduce risk.
Support for alternate foundation and ground improvement systems.
Advisory services for public and private clients.
Rigorous bottom-up cost estimating built from unit- and task-level estimates aligned with the Work Breakdown Structure. Minimizes omission risks, ensures clear traceability, facilitates third-party estimate comparisons, and incorporates risk, uncertainty, and escalation assessments.
Comprehensive owner advisory and management services, including value engineering, constructability reviews, and risk assessments to optimize infrastructure projects.
Bridges · Tunnels · Transit · Highways & Roads · Ports & Harbors · Infrastructure · Transportation · Religious
Ontario, CA · Transit · Client: Metrolinx
Reliance Engineers is part of the Owner's Technical Advisory Team, providing advisory services to Metrolinx as a sub-consultant to HDR on this major urban rail expansion.
Mississauga, CA · Infrastructure
This expansion project for an existing structure included a three-level underground parking garage, requiring a highly sophisticated temporary shoring system.
Ontario, CA · Religious
This church expansion project required a permanent shoring and underpinning system to ensure structural stability both during construction and in the long term.
Cambridge/Somerville/Medford, MA · Transit · Client: Massachusetts Bay Transportation Authority
Reliance Engineers provided geotechnical leadership during the early design phases of this major transit expansion, as part of the design-build extension of the Massachusetts Bay Transportation Authority (MBTA) Green Line from Cambridge to Medford.