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Point Bonita Lighthouse Pedestrian Bridge

Ochrona przed obrywami skalnymi - Point Bonita Lighthouse Pedestrian Bridge 2012

Point Bonita Lighthouse

Ochrona przed obrywami skalnymi - Point Bonita Lighthouse Pedestrian Bridge 2012

Installed SPIDER S4-230 viewed from above

Ochrona przed obrywami skalnymi - Point Bonita Lighthouse Pedestrian Bridge 2012

Installed SPIDER view of the spike plates

Ochrona przed obrywami skalnymi - Point Bonita Lighthouse Pedestrian Bridge 2012

New Pedestrian Bridge

 

Zastosowane systemy

 

Dlugosc systemu od

223 m

 

Rok Instalacji / Montazu

2012

Sytuacja początkowa

In 1954, the U.S. Coast Guard built a suspension footbridge to access the Point Bonita Lighthouse on the outer northwestern point overlooking the Pacific Ocean and San Francisco Bay. Over the years, the bridge had been renovated, but needed to be replaced in 2012. Before a new bridge could be constructed, the rock face needed to be stabilized. The point’s rock mass was fracturing and displaying signs of instability due to years of exposure to harsh marine elements. Stabilization was required to support the weight of a modern bridge without fracturing further.

Opis zastosowanego rozwiazania

A stainless steel anchored SPIDER S4-230 mesh system was installed to stabilize the rock face. The diamond shaped net is comprised of three 4 mm wires twisted into a 1x3 strand, with tensile strength of 239 ksi and a diameter of 5/16 inches. As required by the National Park Service, the net was powder coated bronze to better blend with the natural color of the rock mass and further protect against corrosion.

The project won ENR California’s Best Small Project — Construction award in 2012.

Inwestor

National Park Service

Wykonawca

AIS Construction (defunct)

Chroniony Objekt

Building, Touristic infrastructure

Ochrona przeciwerozyjna

GEOBRUGG SUPERCOATING + PET, INOX / STAINLESS

Projektant

HDR, Inc.

Inne przedsiębiorstwa

Yeh and Associates, Inc.

Osoba kontaktowa na miejscu

Kevin H. Coyle
 

Kevin H. Coyle

Regional Manager Northeast

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,3 Beaudet Terr,Columbia CT 06237 / USA Regional Manager Northeast

Formularz kontaktowy

Saleh Feidi
 

Saleh Feidi

Regional Manager California

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8921 Emperor Ave.,San Gabriel, California 91775 / USA Regional Manager California

Formularz kontaktowy

John Kalejta
 

John Kalejta

Regional Manager Central US

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,3215 67th Avenue Pl,Greeley CO 80634 / USA Regional Manager Central US

Formularz kontaktowy

Bob Lyne
 

Bob Lyne

Regional Manager Southeast

Zagrożeniami naturalnymi
Nżynieria hydrauliczna
Geobrugg North America, LLC,8004 Windspray Drive,Summerfield NC 27358 / USA Regional Manager Southeast

Formularz kontaktowy

Pierce Runnels, Civil Engineer
   

Pierce Runnels

General Manager Geobrugg North America

Zagrożeniami naturalnymi
Geobrugg North America, LLC,22 Centro Algodones , Civil Engineer General Manager Geobrugg North America

Formularz kontaktowy

Tim Shevlin
 

Tim Shevlin

Sales Director

Zagrożeniami naturalnymi
Geobrugg North America, LLC,Salem OR 97302 / USA Sales Director

Formularz kontaktowy