TRANSPORTATION

Rio Vista Airport
Location: Rio Vista, California

Complete design services and construction management for this 3-phased new municipal airport project. The project included design of 4,200 feet of primary runway and 2,200 feet of cross wing runway including taxiways and airport tie down areas and all facilities to place the airport in operation.

Engineering services included complete contract documents including plans, specifications and estimates for primary runways, cross wind runway including tie down area, electrical lighting systems, grading, drainage, construction staking and mapping, fix based operator offices, fueling island, beacon tower, water supply, sewage disposal, access road and well installation. We provided construction management and inspection for all phases of construction.

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San Francisco International Airport - Terminal 2
Location: San Francisco, California

The San Francisco International Airport (SFIA) wanted departure level transportation improvements to be included in the Terminal 2 (T2) Modernization project. T2 modernization includes three transportation and airport security improvements:

  • A weather shelter and passenger waiting platform for shuttle vans and long term parking buses,
  • Wider sidewalks and a weather canopy between the Terminal 2 and 1 and between Terminal 2 and 3, and,
  • A new pedestrian bridge to the inner viaduct van/bus stops with the bridge located on the Terminal 2 main entry axis.

Changes and additions to existing structures always present design and engineering challenges. When we first met with SFIA and Gensler Architects, C+D provided concepts for the Sidewalk Widening that included new foundations, columns down from the edge of the wing girder, new edge beams and slabs. SFIA said, “We can’t have these columns interfering with existing airport tarmac traffic and future airport plans, including the new control tower.” C+D proposed two new pedestrian bridges on either side of the existing Structure Engineers SMRSF Pier that supported the bridge to the AirTrain Station above. Adding loads to the SMRSF was not recommended and two new bridges would actually be a nice feature. There is no “extra strength” for added weight and passengers waiting. SFIA and Gensler challenged Creegan + D’Angelo Engineers to find structure solutions that met the functional, aesthetic and operation goals of SFIA and Gensler Architects.

Sidewalk Widening and Weather Canopy: The solution was adding steel ribs, spaced at each precast wing girder joint, about 8’ – 6” on center, that have bolts through the wing girder. The ribs, posts and tapered canopy beam create the “structure bones” and architecture rhythm for this crisp blue glass shelter.

Bus Shelter: The bus shelter solution was two bridges from the terminal to the wing girder. C+D developed a welded tubular 3 dimensional steel truss for the van/bus shelter “bones”. After the Architect saw the trusses, he asked, “Are we are going to continue the architectural skin and can I use this for signage?” We said “absolutely” – structure provides opportunity for architecture.

Pedestrian Bridge: The final piece of the puzzle was to “fit” the new pedestrian bridge between the (E) SMRSF. The SMRSF could support the added gravity load, define the profile grades and locate supports so the new slab satisfied ADA requirements and fit the (E) conform grades at the terminal slab and inner viaduct sidewalk.

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