SEPTA, 5th Street Station Rehabilitation
Burns served as the engineer of record, providing civil, structural, mechanical, plumbing, electrical, and special-systems engineering design. Sophisticated phasing and sequencing measures ensured continuity of station services, subway operations, and street-traffic activity. Thorough and highly accurate assessments guided comprehensive station repairs despite many unobservable conditions within the 113-year-old structure.
Project achievements included:
- Performing adaptive, in situ remediation to repair concrete-encased structural steel members and transit-grade materials, including 40 columns, 200 feet of platform edges, and an entirely replaced 1,300-square-foot tunnel completed as part of a stairway reconstruction.
- Designing resilient waterproofing strategies through hand excavation followed by tunnel-structure and stormwater-management upgrades.
- Precisely controlling structural integrity through innovative shoring solutions within constrained spaces.
- Accommodating architectural characteristics rarely found within a subway station through structural tactics such as widening tunnels and incorporating translucent pavers to introduce daylight and improve visibility.
- Enhancing street-level safety with new glass headhouses, curb cuts and bumpouts.
- Completing construction on schedule despite significant underground conflicts and COVID-19 restrictions.