Save Our Heritage Organisation
Magazine
Mark Koll & the City of San Diego Engineering
and Capital Projects
Bridge to the Past
A unique bridge built in 1931 across Maple Canyon in San Diego needed seismic retrofitting, a public safety issue that can spell disaster for historic structures. But this steel-truss arch bridge that spans picturesque parkland is a city historic landmark and deemed eligible for listing on the
National Register of Historic Places. The only bridge of its kind in the city, it has intricate ornamental railing and metal work. Its steel members, smothered in dull gray lead paint, were corroding and it had been paved with an overlay of asphalt cement. The design team had the benefit of the original bridge plans, which ensured accuracy in the restoration and replacement parts. Experts determined the original paint color - mannered gold - and used it to repaint the entire bridge. Seven new light poles were custom fabricated, based on the details in the plans, and mounted in the original locations. Recreating the lighting is not only historically accurate and visually attractive but enhances the safety of bridge traffic.
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