Rebuilding the Francis Scott Key Bridge: A Timeline of Events and Key Developments

Maryland's most significant infrastructure project in decades is officially underway.

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The reconstruction of the Francis Scott Key Bridge in Baltimore is officially underway following its tragic collapse on March 26, 2024. The estimated $ 2 billion project represents a transformative effort to enhance safety, modernize infrastructure, and potentially incorporate sustainable practices. Spanning 2.4 miles and 230 feet above the Patapsco River, the new bridge is designed to accommodate larger vessels accessing the Port of Baltimore while ensuring resilience against future challenges.

Timeline of Events and Milestones

  • March 26, 2024: The original bridge collapsed after a collision with a disabled container vessel, resulting in the deaths of six workers.
  • August 2024: Maryland Transportation Authority (MDTA) awarded Kiewit Infrastructure Co. a $73-million Phase 1 progressive design-build contract to begin pre-construction activities.
  • December 20, 2024: Full federal funding was secured through a stopgap spending bill signed by President Biden.
  • January 2025: Pre-construction work, including geotechnical surveys and soil sampling, began with completion targeted for October 2028.

Innovations in Design and Construction

The new Francis Scott Key Bridge will be longer and taller than its predecessor, reflecting the needs of modern maritime activity. Key features of the design include:

  • Enhanced Capacity: The bridge will expand the main span pylons to 1,400 feet, increasing clearance for larger container ships.
  • Heightened Clearance: Rising 230 feet above the river—45 feet higher than the original—it will support the growing demands of the Port of Baltimore.
  • Durability and Longevity: The rebuild prioritizes materials and design elements suited to withstand harsh marine conditions, reducing maintenance needs and extending the structure’s lifespan.

Sustainability in Focus

While details about material selection have not been fully disclosed, sustainability considerations may play a significant role in the project. Modern infrastructure projects often leverage advanced construction practices to reduce environmental impact:

  • Low-Carbon Concrete: Likely candidates for construction include concrete mixes designed to reduce greenhouse gas emissions during production.
  • Recycled and Local Materials: The use of recycled steel and locally sourced materials could lower the project's carbon footprint while supporting regional economies.
  • Waste Minimization: Surveys and geotechnical studies are being conducted to optimize material use and reduce construction waste.

With its federal categorical exemption, the project is proceeding within the original right-of-way, avoiding the need for a full environmental review. While this expedites construction, it underscores the importance of voluntary sustainability measures.

Key Partnerships and Oversight

The Maryland Board of Public Works has approved a $75-million general engineering consulting contract for the project, awarded to the Bridging Maryland Partnership—a joint venture of WSP USA, Rummel, Klepper & Kahl (RK&K), and Johnson, Mirmiran & Thompson (JMT). Under this five-year agreement, the partnership will:

  • Audit design and construction processes.
  • Ensure compliance with MDTA standards.
  • Promote diversity with a 31.5% Disadvantaged Business Enterprise (DBE) participation target.

The involvement of multiple stakeholders ensures rigorous oversight and adherence to quality standards throughout the reconstruction process.

Environment + Energy Leader