NE 27th Terrace Bridge Replacement

WGI was the Engineer of Record for this project which replaced a two-lane single span bridge over the Wisteria Canal; the only roadway access to the Harbor Village Island residential community. Other improvements included utility design and relocation, provision for reuse of water, the addition of sidewalks, landscaping, decorative and functional gazebos providing entry features for the community, and an innovative design using spread footers for the substructure and dead men to stabilize the sheet pile walls. Challenges during the project included the discovery of complete failure of all pile support due to an existing fracture zone just below the mud line and subsidence of the existing structure due to soil consolidation. Mitigation efforts developed involved lateral support for existing seawalls, implementation of reduced speed and weight limits for the existing bridge, and revising the construction schedule to expedite transferring traffic to the new bridge. Close coordination with Utility Agencies and the community was required.