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Northwest Geotechnical Workshop

Executive Summary Report

As part of our technology sharing program, we are distributing this Executive Summary of the technical information presented at the subject workshop held in Jackson, Wyoming August 29 to September 1, 2005. This year we had participants from 10 State DOTs, the FHWA Resource Center, CFLHD, WFLHD, and FHWA Division offices, and several invited speakers from private industry. A variety of technical and case study presentations were made on subjects such as slope stability, foundations, geophysics, retaining walls, and other geotechniques. The workshop included a 1-day field trip to see completed and planned projects on Teton Pass, Wyoming State Route 22, and the Snake River Canyon, US 89, both of which span the border between Wyoming and Idaho. Presentation awards included: Best Presentation - Kirk Hood, Wyoming DOT for "A Wall, a Man, and His Burrito"; Best Technical Presentation - Tony Allen, Washington State DOT for "Design and Performance of Two Block Faced Geogrid Walls Up to 36 Feet High"; and Project From Hell - Lee Grosch, Montana DOT for "Embankment Construction on Soft Organic Soils - Contractors Gone Wild". The Final Agenda for this meeting is attached.

The 2005 Mr. Northwest Geotech award recipient was Dave Stanley, Alaska DOT&PF. The 2005 Hat's Off Award recipient was Mark Falk, Wyoming DOT.

This years Northwest Geotechnical Workshop has again proven to be our most successful geotechnical technology transfer activity. The State and FHWA personnel from the 10 Northwest and Rocky Mountain States who participate in this workshop consider this to be the best and most productive technical session they attend during the course of the year.

Next year the Northwest Geotechnical Workshop will be hosted by the Colorado Department of Transportation, September 24 - 27, 2006 in Breckenridge, Colorado. The fieldtrip will be conducted in conjunction with the Highway Geology Symposium which will be in the same location on September 27 - 29, 2006.

Barry D. Siel, FHWA Resouce Center
Northwest Geotechnical Workshop
Steering Committee Chair

Monday August 29, 2005
5:00 - 9:00 Registration & Icebreaker
Wyoming DOT & FHWA
Tuesday August 30, 2005
Session 1 - Retaining Walls
Moderator: Mark Falk, WYDOT 
8:00 - 8:30 NPS Retaining Wall Inventory System
Daniel Alzamora FHWA-CFLHD
8:30 - 9:00 South Dakota Experience with Reinforced Earth Company Wire Faced Wall System
Bob Longbons South Dakota DOT
9:00 - 9:30 Caribou Creek Part 2: The Fill Wins and the Headaches Start
George Machan Landslide Tech.
Dave Stanley, AKDOT&PF
9:30 - 10:00 Break
10:00 - 10:30   Geogrid Reinforced Modular Block Wall on SR-18
Tony Allen Washington State DOT
10:30 - 11:00 A Wall, A Man and His Burrito
Kirk Hood Wyoming DOT
11:00 - 11:30 FHWA Sponsored Research Retaining Walls & Pavements
Frank Harrison, Golder Assoc.
Scott Anderson, FHWA-CFLHD
11:30 - 1:00 Lunch
Geotech Challenges on the CAT by Peter Osborn, FHWA-RC
Session 2 - Stability
Moderator: Jon Ketterling, NDDOT 
1:00 - 1:30 Hurricane Force Landslides
Justin Henwood FHWA-CFLHD
1:30 - 2:00 Road to Ruins: 100 years at Mesa Verde Park Addressing Landslides on the Access Road
Scott Anderson FHWA-CFLHD
2:00 - 2:30 2005 Debris Flows, Beartooth Highway, MT
Cameron Kloberdanz Montana Dept. Trans.
2:30 - 3:00 Break
3:00 - 3:30 Geotechnical Problems and Solutions for the US-59 Corridor
Bob Henthorne Kansas DOT
3:30 - 4:00 Glenwood Canyon Rockfall
Barry Siel FHWA-RC
4:00 - 5:00 Snake River Canyon Projects
John Wolosick, Hayward/Baker
Mike Hager, WYDOT
Wednesday August 31, 2005
8:00 - 4:00 Field Trip - Snake River Canyon
Wyoming DOT
Thursday September 1, 2005
Session 3 - Embankments
Moderator: Bill Capaul, ITD
8:00 - 8:40 Case Histories and New Developments in Montana
Brian Collins Montana Dept. Trans.
8:40 - 9:00 I70/Vail Sinkhole - June 1, 2003
Hsing-Cheng Liu Colorado DOT
9:00 - 9:40 Embankment Construction on Soft Organic Soils - Contractors Gone Wild
Lee Grosch Montana Dept. Trans.
9:40 - 10:10 Break
Session 4 - Geotechnology
10:10 - 10:40 I-90 and Outdoor Plumbing
Jay Tople South Dakota DOT
10:40 - 11:10 Implementation of a Geotechnical Data Management System
Margaret Darrow, AKDOT
Salvatore Caronna, gINT
11:10 - 11:40 How Deep Does PDA Get?
Grant Gummow Utah DOT
11:40 - 1:00 LUNCH - On Own
Session 4 - Geotechnology Con't
Moderator: Kevin Griese, SDDOT
1:00 - 1:30 Whirlwind Water Tour of Utah
Leslie Heppler
Utah DOT
1:30-2:00 LRFD and the WSDOT Geotech Manual
Tony Allen Washington State DOT
2:00-2:30 Canyon Creek Bridge - Micropile Foundation
John Ingram Idaho Trans. Dept.
2:30-3:00 Break
Session 5 - Foundations
3:00-3:30 More Fun with Design-Build Geotech Issues (Getting More "Bang" for the Buck)
Jim Higbee Utah DOT
3:30-4:00 Deep Pile Foundations
Jeffrey Nielson FHWA - CA Division
4:00-5:00 Rockfall Modeling and Animation Rock Island Cut, Washington State
Dave Findley, Golder Assoc.
Norm Norrish, Wyllie & Norrish
6:00 - 9:00 Awards Dinner
African KISS by George Machan, Landslide Technology

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