Bryn Mawr Hospital, Bryn Mawr, Pennsylvania

Overview: Mainline Health Real Estate invested heavily in expansions and upgrades to their Bryn Mawr Hospital campus in the western suburbs of Philadelphia. GeoStructures was involved in several phases of design and construction for various structures and improvements. This expansion, in particular, includes the development of Medical Office Building B (MOB B) and an eight-story parking structure. GeoStructures provided geotechnical design, construction monitoring, and stormwater management services for the project.

To characterize the subsurface soil and groundwater conditions across the medical campus, GeoStructures completed 65 test borings, 12 piezometers, numerous test pits, infiltration testing, and laboratory testing. For the 8-story parking structure with 2 levels below grade, we designed an innovative temporary-permanent soil nail shoring system. This system minimizes lateral earth pressure against the basement walls to achieve significant savings in the construction of 2 levels of underground parking. For foundation support, we used special settlement mitigating measures below heavily loaded column footings to facilitate the use of cost-effective shallow foundations and slab on grade.

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Providing state-of-the-art geotechnical engineering services with an unwavering commitment to excellence and innovation.

Percolation and Permeability In-Situ Testing 

Drilling Services and Subsurface Investigations

Foundation Investigation and Design

Highway and Bridge Geotechniques

Support of Excavation and Underpinning

Soil-Structure Interaction Analysis and Modeling

Soil Dynamics & Site-Specific Response Spectra

Vibration Monitoring and Analyses

Forensic Evaluations

Slope and Retaining Wall Evaluation and Design

Lime and Cement Stabilization

Mine Subsidence Analysis and Remediation

Sinkhole Evaluation and Remediation

Soil Improvement Techniques

Dam Analysis and Rehabilitation

Environmental Services

Landfills, Ponds, and Lagoons

Pavement Design and Rehabilitation

Construction Inspection and Materials Testing

Geotechnical Laboratory Testing

Concrete and Cement Testing

Petrographic Analysis

Instrumentation and Special Testing

Asphalt Testing

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3-D Dynamic Finite Element Analysis



Institutional & Educational


Industrial, Pharmaceutical, & Gene Therapy

Landfill Expansion Design


Research & Forensics


Water & Wastewater

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