State Route 9A Promenade and Tunnel

New York, NY

Located in one of the most heavily traveled areas in the world, State Route 9A, West Street, and Battery Place Underpass required immediate repairs.

After sustaining damages from hauling debris from the World Trade Center site in New York City after the events of September 11, 2001, extensive work was needed to fix the active roadway and tunnel while minimizing disruption in lower Manhattan.

Conti performed a complex and diverse scope of work, including reconstruction and rehabilitation of a major artery and existing tunnel, underground utility improvements, electrical and mechanical improvements to the tunnel, installation of an intelligent transportation system (ITS) with conduit and fiber optic communication cables and wireless CCTV cameras, storm drainage upgrades, and roadway reconstruction. The team also installed 175,000 square feet of solid granite pavers for new bikeways and pedestrian promenades, and provided landscaping for the creation of a linear urban park (with over 200 trees, 7,000 shrubs and 10,000 perennial flowers).

Conti performed challenging structural work involved with the new extension of the tunnel roof slab to allow for a U-turn at grade for cars and buses. The team managed heavy vehicular and pedestrian traffic throughout the project, constructing bypass roadways and temporarily widened the existing travel way for two active lanes of traffic to accommodate the public. Conti completed the project successfully and safely two months ahead of schedule.

Construction Achievement Award, Project of the Year – American Society of Civil Engineers Award of Merit, Highway & Roadway – New York Construction Magazine

Project details

Client New York State Department of Transportation
Value $63M
Status Project Completed
Key features
  • Construction of underground concrete structures
  • Installation of intelligent transportation systems
  • Management of traffic
  • Coordination of 3rd party entities
  • Construction of roadways
  • Installation of stone walls
  • Landscaping



 

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