Leimert Bridge Seismic Retrofit
Oakland, CA · Bridges · 2026
Project details
Seismic retrofit and historic restoration of the historic Leimert Bridge in Oakland, California.
Biggs Cardosa Associates, Inc.
Reshaping California's infrastructure through innovative structural engineering and design
About the firm
Biggs Cardosa Associates, Inc. is a leading, award-winning California structural engineering practice providing structural design, consulting, project management, and construction management services. For over 35 years, it has reshaped California highways, skylines, and infrastructure through innovative design of bridges, transportation structures, buildings, and hydraulic facilities. The practice specializes in structural design, seismic retrofit, modification, and rehabilitation, delivering high-quality, cost-effective, and dependable engineering solutions.
- Team
- Midsize
- Firm type
- Structural Engineering · Civil Engineering
People
Roy SchnabelManaging Principal
Daniel DevlinPrincipal
Mahvash HarmsPrincipal
Kathleen DillonPrincipal
Ron OenPrincipal
Eric PheiferPrincipal
Tom SwayzePrincipal
Michael ThomasPrincipal Emeritus
John AlciatiAssociate
Raj BharilAssociate
Tom DensfordAssociate
Sikandar HayatAssociate
Dan LazzariniAssociate
Ines LiAssociate
Anthony NotaroAssociate
Anthony RichardsonAssociate
Shaun SumpterAssociate
Stephen BiggsPrincipal Emeritus
Mark CardosaPrincipal Emeritus
Capabilities
Structural Engineering
Comprehensive structural design, seismic analysis, and evaluation for infrastructure and building systems.
- Structural Design
Detailed design and engineering for bridges, buildings, transportation facilities, and hydraulic structures.
- Seismic Retrofit
Advanced seismic assessment and retrofit design to improve structural resilience and safety.
- Rehabilitation & Modification
Engineering services for structural modifications, historic preservation, and rehabilitation of aging structures.
Project and Construction Management
Project coordination, construction oversight, and management services to ensure successful project execution.
- Project Management
Strategic planning, design coordination, and scheduling services for complex structural projects.
- Construction Management
On-site construction oversight, quality assurance, and constructability reviews.
Consulting and Inspection
Expert engineering consulting and structural inspections to support asset maintenance and compliance.
- Consulting Services
Specialized structural feasibility studies, peer reviews, and code compliance consulting.
- Inspection Services
Field condition assessments, structural health inspections, and quality control monitoring.
Industries
Bridges · Highways & Roads · Transit · Rail · Airports · Stormwater & Flood Control · Water Resources · Public Safety · Education · Federal · Government · Parks & Open Space · Multifamily Residential · Commercial · Healthcare
Projects
Union Road Bridge Replacement
San Benito County, CA · Bridges · 2026
Project details
Replacement of the Union Road Bridge in San Benito County to improve regional transportation infrastructure.
Rosecrans/Marquardt Grade Separation
Santa Fe Springs, CA · Highways & Roads · 2025
Project details
Award-winning grade separation project resolving a critical rail and highway crossing conflict.
Foster City Levee Improvements Project
Foster City, CA · Stormwater & Flood Control · 2024
Project details
Multi-award-winning environmental and structural improvement of the Foster City levee system.