51 N Street & 1250 1st Street, NE — Washington, DC

Project Details

Field

Details

Size

Phase I ≈ 334,467 gsf | Phase II ≈ 347,723 gsf (plus multi-level parking)

Stories / Height

Phase I: 10-story mixed-use | Phase II: 13-story office tower

Market

Mixed-Use / Office / Residential

Project Overview

A two-phase mixed-use development delivering a 10-story office/residential tower with retail and theater space, followed by a 13-story office tower. TCE engineered the structural systems for both phases—including multi-level parking—creating a flexible, high-performance urban complex ready for long-term success.

Structural Highlights

  • Structural design of 10-story mixed-use tower (Phase I)
  • Structural design of 13-story office tower (Phase II)
  • Multi-level below-grade parking integrated across phases
  • Efficient shallow spread footing foundation strategy