During its construction (1991-2004) the Central Arterty / Tunnel Project was the largest and most complex infrastructure project in the history of the United States, costing nearly $15 billion. Waterfield Design worked on 4 separate sections of this massive project, with a construction value that approached $2 billion.
Our work involved design for the reconstruction of the new surface roads & public open space that was created by the relocation of the existing 6 lane 1940’s era viaduct into an 8-12 lane underground tunnel.
Waterfield created interim surface restoration design and grading for all Interchange landscape areas and perimeter development parcels. Our services also included final surface design at the city street interface with the tunnel’s interchange ramps and connectors. Design elements included:
Pedestrian and bikeway circulation
Public plazas and sitting areas
Urban landform designs
Surface street connections to the Harborwalk
Open space landscape design
Planting, street tree selection, and irrigation design
Extensive construction management assistance was provided over a 4 year period.
Waterfield’s work covered the following construction contracts:
C09C1; C09C2; C09C4