Bridge Concepts

In February, the project team developed six potential design concepts. The community was asked which concepts they preferred and what aspects of each they liked or did not like. Based on feedback from the community and project partners, we will be developing two of these concepts into more detailed alternatives to share with the community this summer.

All concepts provide emergency vehicle access and a safe path for pedestrians and cyclists.

1 - Sculptural Columns

  • Integration of natural form and connection to the Sound
  • Girder structure is below deck (steel box or mass timber)
  • Short spanning capacity with good structural economy
  • Potential use of sustainable prefabricated timber panels
  • Distinct overlooks
Two photos of different bridges that inspired the sculptural column concept. These example bridges have thick bold support columns holding up simple walkways.

Graphic of bridge concept one along with elements that inspired the design. The concept shows a kinked bridge with stone supports. The shape and character of the bridge mimics the organic forms of sea life like kelp and sea stars.

2 - Driftwood Bridge

  • Re-creation of the Edmonds bluff - Spirit of Place
  • Form of bridge is driven by key views of the water and mountains
  • Low to moderate expense girder structure
  • Precast or mass timber structure
  • Only needs a single support, located farthest from the water
  • Parklike, natural seating
Three photos of different land bridges that inspired the driftwood bridge concept. These example bridges are covered in earth and vegetation and create a less interrupted flow of the landscape over roads and pathways.

Graphic of bridge concept two along with some elements that inspired the design. The concept shows a bridge that goes over the railroad tracks and then meets up with a sloped pathway that blends smoothly into the Landing and is inspired by driftwood logs.

3 - Kelp Ribbon Bridge

  • Form inspired by kelp beds & sea grass
  • Girder (large beam structure) with sinuous alignment
  • More frequent columns and thinner structural depth
  • Short spanning capacity with good structural economy
  • Serpentine promenade with no distinct overlooks
Two photos of different bridge examples that inspired the kelp ribbon bridge concept. These bridge examples have gently wavy forms.

Graphic of bridge concept three along with some elements that inspired the design. The concept shows a wavy bridge that goes over the railroad tracks and connects to the Landing in a consistent wave motion that mimics the shape of kelp or sea grass.

4 - Intersecting Waves - Fluid Form

  • Form derived from waves
  • Steel through girder, with bridge structure above walkway
  • Medium spanning capacity with good economy
  • Radial alignment and variable depth structure
  • Radial promenade with no distinct overlooks
Two photos of different bridge examples that inspired the intersecting waves design. These examples are simple bridges that have heavy sculptural railings.

Graphic of bridge concept four and some elements that inspired the design. The concept shows a simple bridge with railings that mimic waves.

5 - Boats in the Harbor – Stepped Peaks

  • Inspired by marina forms & traditional fishing structures
  • Truss (long span steel structure) design with moderate economy
  • Kinked alignment with distinct overlook
Two photos of different bridge examples that inspired the boats in the harbor design. These bridges look like large suspension bridges with tall towers and simple walkways.

Graphic of bridge concept five and some elements that inspired the design. The concept shows a bridge that extends over the railroad tracks and angles sharply to slope down to the Landing. The towers and supports on the bridge mimics the shape of sailboats.

6 - Cast Net – Singular Element

  • Form inspired by fishing net hoops or fishing baskets
  • Steel arch (a long main span) with moderate expense
  • Cantilevered deck that opens outward for expanive views
  • Radial promenade and no distinct overlooks
  • Long span capacity that avoids environmental areas easily
Three photos of different bridge examples that inspired the cast net design. These bridges include arch-shaped supports and cables that hold up simple curved walkways.

Graphic of bridge concept six and some elements that inspired the design. The concept shows a bridge that extends over the railroad tracks and curves gently as it slopes down to the landing. The bridge structure includes an arch and it is inspired by traditional slip nets.