S.W.COLE was retained by T. Y. Lin International in 2013 to provide subsurface explorations, geotechnical engineering services and construction phase consultation for the replacement of Beach Bridge (Second Bridge) in North Haven, Maine.
The team designed and completed the first traditional geosynthetic reinforced soil (GRS) bridge in the State of Maine and thought to be the first in the United States constructed in a tidal environment. The project replaces a structurally deteriorating bridge and restores access and preserves traditional use as a wharf for the town and fisherman working in the waters of Pulpit Harbor.
S.W.COLE completed geotechnical analysis of the GRS abutments, wing walls and approach MSE retaining wall using Load and Resistance Factor Design (LRFD), global stability analysis of the abutments, considerations for reuse of the existing stacked granite block pier and pavement structure design. S.W.COLE also provided support in the preparation of project plans and construction details using CAD as well as preparation of specifications and material quantity estimates.
The bridge was demolished and replaced along the same general alignment in less than six months for under $900K. The use of the GRS bridge application proved to be very successful, reducing construction time and costs even in a tidal environment. The project was named the Engineering Excellence Grand Conceptor Award by ACEC Maine in 2014.