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LKB undertook Design Phases I-VI, including an EPP and preliminary design of the bridge, for the replacement of the pre-existing 10-span, 390-foot-long structure with a pre-stressed concrete continuous beam structure. The design included highway realignment, drainage improvements, MPT, and construction staging plans.

The bridge connects the Villages of North Haven and Sag Harbor, the latter of which is situated in both the Town of Southampton and the Town of East Hampton. Consequently, LKB’s responsibilities included public outreach and coordination with two villages, two towns, two historic societies, and Suffolk County. Major design considerations included replacement of the existing bridge with a new bridge at the same location, aesthetics of the new structure, and staged bridge construction to allow through traffic over the existing structure during construction.

The newly-constructed bridge replaces a 64-year-old deteriorated structure of surpassing historic grace and elegance. The new bridge looks much like the old, with the added benefit of modern construction techniques. This was of the utmost importance to local communities, which shared a nostalgic attachment to the bridge. The “grass roots” public involvement process helped residents claim the new bridge as their own. With sensitive engineering design, advanced display aids, intelligent traffic management, and more, LKB is proud to have played its part in this local success story.