Lost Hills Pedestrian Bridge

  • The Lost Hills project is a pedestrian crossing over State Route 46 in California
  • The structure spans 176 feet and is 10 feet wide
  • The bridge also includes 309-foot spiral approach ramps on each side
  • DeSimone provided 3D structural modeling and detailing for the steel portions of the bridge in order to generate fabrication shop drawings, material lists, and CNC files for the steel fabricator
  • DeSimone provided shop and field construction model and drawing services for several spans on the reconstruction and rehabilitation of the viaducts at the Throgs Neck Bridge approaches
  • The Throgs Neck Bridge is a suspension bridge in New York City, carrying six lanes of Interstate 295 over the East River where it meets the Long Island Sound
  • The bridge connects the Throgs Neck section of The Bronx with the Bay Terrace section of Queens

About the project:

  • A public-private partnership tasked with replacing 558 aging bridges throughout the area within three years
  • Bridges primarily consisted of precast concrete culvert or box beam structural systems in rural areas on smaller state highways
  • Prime contractor suffered repeated setbacks due to multiple weather-related loss events impacting project schedule
  • Damage to approximately 80 construction sites and partially constructed bridges

Scope of services:

  • Investigation included a scope of damage assessment, repair invoice reconciliation, and ROM estimation
  • Created as part of Universal Studio’s $3 billion expansion
  • Guestrooms and restaurants encircle the harbor
  • Rivers and canals connect the hotel with Universal Studios, other hotel amenities and entertainment attractions
  • The hotel resort has a total area of approximately 1,000,000 sf.
  • Houses 750 rooms, 1,125 on-site parking spaces and various restaurant and retail sites incorporated into the Italian theme
  • A 15-level, 1,430,000 sf, 4,244-car steel parking structure
  • Designed solely for the employees of Harrah’s Casino and The Venetian Resort & Casino in Las Vegas
  • One of the largest steel garages in North America
  • The design’s primary lateral force-resisting system is comprised of slotted-web moment frames
  • Presented a unique design challenge with two, 175-foot long elevated pedestrian bridges
  • The bridges are designed to fit above the existing shared access road and below the Las Vegas Monorail’s elevated structure, to connect to the existing casino garages
  • A fast-track project
  • An expansion and renovation project, as part of Miami Children’s Hospital “Building on a Dream” campaign
  • Enhances the quality of care and service to the families
  • The 68,000 sf Ambulatory Care Building is designed to expand specialized programs to meet demands for service
  • Houses the hospital’s Pediatric Care Center, Congenital Heart Institute, Brain Institute, Plastic Surgery and the Craniofacial Center, as well as a new café
  • Includes further development of the MRI building, along with an adjacent 20 feet connector bridge that joins the building to the 196 Blank Building
  • Also includes a three-story addition used as a conference center, a PICU/NICU expansion, courtyard infill and a new entry at the Variety Building
  • Build to withstand a wind speed of 178 miles per hour and meets a large missile impact criteria consisting of a nine-pound missile traveling at 80 feet per second
  • Awards:
    New York Association of Consulting Engineers Award 2003