Tiburon plans repairs of Ark Row seawall along cove

The Ark Row seawall, known as the Main Street Bridge, sits along Belvedere Cove near Beach Road. The structure received poor and fair grades from Caltrans for cracked concrete and corroded steel beams and rebar, so Tiburon is making temporary repairs expected to last a few decades until it can be fully retrofitted or replaced. (Voss Laboratories Inc. via town of Tiburon 2018)

Tiburon is planning a half-million dollars in temporary repairs of a deteriorating 70-foot stretch of Ark Row seawall along Belvedere Cove, which officials hope will last until it can be retrofitted or replaced.

The Town Council on March 19 approved a $98,400 contract with Walnut Creek-based infrastructure adviser Moffatt & Nichol for design work on the project, which aims to address breaks and delamination in the concrete, cracks and breaks in the substructures that support the road’s middle and northern end and to mitigate ongoing erosion underneath.

The stretch of road in question is known as the Main Street Bridge, where the seawall structure has two spans of beams forming a bridge to support the roadway and sidewalk near the intersection with Beach Road. And it’s just feet from Belvedere’s own stretch of Beach Road seawall that’s failing from erosion and targeted for $3 million in repairs.

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