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United States
A BRUGG GROUP COMPANY
United States

Cape Horn, State Road 14

SR-14 MP25.4, 98671, Washougal, United States
2017
Customer
Washington State Department of Transportation
Engineering
Washington State Department of Transportation
Contractor
Hi-Tech Rockfall Construction, Inc.
Protected object
Road
System height
4.0 m
System length
15 m
Corrosion protection
GEOBRUGG SUPERCOATING®
Number of barriers
1
Retention capacity
500 m³
Initial situation

The Columbia River separates the States of Oregon and Washington cutting across the Cascade Mountains creating a fantastically scenic Gorge that was named a National Scenic Area in 1986.  Cape Horn in the Gorge is a massive basalt cliff outcrop composed of the Grand Ronde Basalt Flows (http://columbiariverimages.com, 2017). State Route (SR) 14 is the major east-west roadway on the north side of the Gorge in the state of WA.  There are numerous watersheds draining from the gorge slopes which roads such as the SR-14 cross, one such drainage near Cape Horn has produced historic debris flows.  During the 1990s a drainage was outfitted with a now obsolete debris flow net structure in the 1990s.

Description

During the spring of 2017, a storm-induced debris flow overwhelmed the original, basic debris flow structure. The Washington State Department of Transportation (WSDOT) contacted Geobrugg North America, LLC for technical assistance to layout and design a modern flexible debris flow mitigation structure. Their analysis resulted in specifying a UX-120-H4 system from Geobrugg North America, LLC. Hi-Tech Rockfall Construction, Inc. was contracted to perform the installation work.  Being the Gorge a National Scenic Area aesthetics are a major concern and required colorization of the flexible debris flow structure.  Powder coating colorization was chosen by WSDOT to camouflage the system, but the exact color they specified was unavailable.  Geobrugg suggested another colorization system from the company NATINA: NATINA Steel stain with a rustic brown, earth tone finish.

Your local contact

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Natural Hazards
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / USA
Phone +1 860 377 3230

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Saleh Feidi
Saleh Feidi
Regional Manager California
Natural Hazards
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / USA
Phone +1 909 706 8964

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John Kalejta
John Kalejta
Regional Manager Central US
Natural Hazards
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / USA
Phone +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Natural Hazards
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / USA
Phone +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Natural Hazards
Geobrugg North America, LLC
22 Centro Algodones
Phone +1 505 771 4080
Mobile +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Natural Hazards
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / USA
Phone +1 503 423 7258

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