Cornforth Consultants
  • Home
  • Services
    • Earth & Rockfill Dams
    • Reservoirs, Canals, and Levees
    • Spillway Safety Inspections
    • Landslides and Rockfall
    • Earthquake Engineering
    • Geologic Hazards
    • Geotechnical Site Characterization
    • Hydrogeology
    • Expert Witness
    • Concrete Dams and Locks
    • Geotechnical Instrumentation
    • Deep and Shallow Foundations
    • Geotechnical Manuals
  • Industries
    • Water Resources
    • Energy
    • Natural Resources
    • Industrial
    • Transportation
    • Ports and Airports
    • Expert Witness
  • Projects
    • Earth and Rockfill Dams >
      • Barney Reservoir
      • Frog Lake Reservoir
      • Iron Gate Dam Raise
      • McGuire Dam Raise
      • Bonneville Cofferdam
      • Bull Run No. 2 Seismic Stability Analysis
    • Levees and Canals >
      • Libby Dike Rehab.
      • St. Johns Dike Stabilization
      • Cowlitz River Levees
      • Swift Canal Failure
    • Earthquake Engineering >
      • Barney Dam Seismic Analysis
      • Fern Hill WTP Liquefacation Study
      • Bull Run No. 2 Seismic Stability Analysis
      • Mt. Tabor Seismic Stability Analysis
      • Port Westward Power Plant Seismic Design
    • Rock Slopes and Tunnels >
      • Libby Rockfall Mitigation
      • Sandy River Pipeline Tunnels
      • Ketchikan Third Avenue Extension
      • Sain Creek Water Supply Tunnel
      • Montana Rockfall Hazard Rating System
    • Foundations >
      • Port Westward Power Plant
      • Cascade Locks Casino
      • Air National Guard Hangar
      • Biglow Canyon Windfarm
      • Oakridge Water System Improvements
    • Concrete Dams and Locks >
      • John Day Lock & Dam
      • Marmot Dam Removal
      • The Dalles Dam
      • Willamette Falls Dam
      • Bonneville Dam
    • Transportation >
      • OTIA Cracked Bridge Geotechnical Baselines
      • Newburg Dundee Bypass Design DEIS
      • I-84 Sandy River Bridge Investigation
      • Tanana River Bridge Foundation, Tok, Alaska
      • Montana RHRS Implementation
      • Ketchikan Third Avenue Extension
    • Ports and Airports >
      • Navy CVN Drydock
      • Depoe Bay Seawall Distress
      • Willamette Falls Flow Control Structure
      • Air National Guard Hangar
    • Water and Wastewater >
      • Fern Hill Water Treatment Plant
      • Tualatin Valley North Transmission Line
      • Evaluation of 28 Water Storage Facilities
      • City of Sandy Water Treatment Plant
      • Mt. Tabor Reservoir No. 5 Cap Study
      • Oakridge Water System Improvements
  • Staff
  • Resources
  • Careers
    • Geotechnical Engineer
  • Contact Us

Gerry M. Heslin

Gerry Heslin, P.E.
Registration
Civil Engineer - OR, WA

Geotechnical Engineer - OR

Career
2001 - present
Senior Associate Engineer and Vice President
Cornforth Consultants, Portland, OR

1997 - 2001
Senior Engineer
Shannon & Wilson, Seattle, WA

Education
1996/M.S. in Geotechnical Engineering
Virginia Tech, Blacksburg, VA

1995/B.S. in Civil Engineering
University of Portland, Portland, OR

Honors/Societies
Past Chair, Portland Geotechnical Engineer's Group, American Society of Civil Engineer (ASCE)
 Senior Associate Engineer and Vice President
Mr. Heslin has more than 20 years of geotechnical engineering experience in the Pacific Northwest. His particular strengths include evaluating constructability of geotechnical projects and designing landslide stabilization measures, foundations, and shoring systems.

Representative projects include the following:​
  • County Line Landslide, Togwotee Pass, Wyoming
  • BZ-Glenwood Highway Landslide, BZ Corner, Washington
  • Dickey Prairie Road Landslide, Mulino, Oregon
  • Buckner Creek Road Landslide, Mulino, Oregon
  • JC Boyle Flume Failure, Keno, Oregon
  • Greens Creek Mine Access Road Landslide, Admiralty Island, Alaska
  • Soda Springs Dam Fish Passage Structures, Toketee Falls, Oregon
  • Looking Glass Hill Road Landslides, East Glacier, Montana
  • Libby Rockfall Mitigation, Libby, Montana
  • Depoe Bay Boat Basin, Depoe Bay, Oregon
  • Third Avenue Extension, Ketchikan, Alaska
  • Snowbasin Access Road Landslide, Weber County, Utah
  • BLM/ERFO Trout Creek Landslide, Quartzville, Oregon
  • BNSF Railroad Embankment Failure MP 128, Ulm, Montana
  • North Slope Mt. Solo Landslide, Longview, Oregon
  • 5th Avenue N/N Lynn Street Debris Flow, Seattle, Washington
  • Beartooth Highway Debris Flows, Red Lodge, Montana
  • Heiple Road Landslides, Estacada, Oregon
  • Lusted Road Landslide, Sandy, Oregon
  • Going to the Sun Road MP 33 Debris Flows, St. Mary, Montana
  • Cochran and Pottratz Road Landslides, Washington County, Oregon
  • Rock Creek Fish Hatchery Landslide, Idleyld Park, Oregon

Selection of technical presentations and lectures:
  • Bear Creek Dam Seismic Stability, Association of State Dam Safety Officials, Sacramento, California
  • Seismic Stability of Astoria’s Water Supply, Northwest Hydropower Operators Forum, Eugene, Oregon 
  • Performance of Aging Post-Tensioned Anchors In Dams, Association of State Dam Safety Officials, Coeur d’Alene, Idaho



​Mike Meyer - Gerry Heslin - George Machan - ​Charlie Hammond - Brent Black - Darren Beckstrand - Chris Carpenter - Ben George
​
Wade Osborne -  Tom Westover - Greg Landau - Aine Mines - Logan Allender - Andy Kost - Adam Koslofsky - Sebastian Dirringer
Rachel Hunt -Justin McCarley - Aleyna Link - Michael Bunn - Andy Vessely - Larry Pierson - John Sager
  • Home
  • Services
    • Earth & Rockfill Dams
    • Reservoirs, Canals, and Levees
    • Spillway Safety Inspections
    • Landslides and Rockfall
    • Earthquake Engineering
    • Geologic Hazards
    • Geotechnical Site Characterization
    • Hydrogeology
    • Expert Witness
    • Concrete Dams and Locks
    • Geotechnical Instrumentation
    • Deep and Shallow Foundations
    • Geotechnical Manuals
  • Industries
    • Water Resources
    • Energy
    • Natural Resources
    • Industrial
    • Transportation
    • Ports and Airports
    • Expert Witness
  • Projects
    • Earth and Rockfill Dams >
      • Barney Reservoir
      • Frog Lake Reservoir
      • Iron Gate Dam Raise
      • McGuire Dam Raise
      • Bonneville Cofferdam
      • Bull Run No. 2 Seismic Stability Analysis
    • Levees and Canals >
      • Libby Dike Rehab.
      • St. Johns Dike Stabilization
      • Cowlitz River Levees
      • Swift Canal Failure
    • Earthquake Engineering >
      • Barney Dam Seismic Analysis
      • Fern Hill WTP Liquefacation Study
      • Bull Run No. 2 Seismic Stability Analysis
      • Mt. Tabor Seismic Stability Analysis
      • Port Westward Power Plant Seismic Design
    • Rock Slopes and Tunnels >
      • Libby Rockfall Mitigation
      • Sandy River Pipeline Tunnels
      • Ketchikan Third Avenue Extension
      • Sain Creek Water Supply Tunnel
      • Montana Rockfall Hazard Rating System
    • Foundations >
      • Port Westward Power Plant
      • Cascade Locks Casino
      • Air National Guard Hangar
      • Biglow Canyon Windfarm
      • Oakridge Water System Improvements
    • Concrete Dams and Locks >
      • John Day Lock & Dam
      • Marmot Dam Removal
      • The Dalles Dam
      • Willamette Falls Dam
      • Bonneville Dam
    • Transportation >
      • OTIA Cracked Bridge Geotechnical Baselines
      • Newburg Dundee Bypass Design DEIS
      • I-84 Sandy River Bridge Investigation
      • Tanana River Bridge Foundation, Tok, Alaska
      • Montana RHRS Implementation
      • Ketchikan Third Avenue Extension
    • Ports and Airports >
      • Navy CVN Drydock
      • Depoe Bay Seawall Distress
      • Willamette Falls Flow Control Structure
      • Air National Guard Hangar
    • Water and Wastewater >
      • Fern Hill Water Treatment Plant
      • Tualatin Valley North Transmission Line
      • Evaluation of 28 Water Storage Facilities
      • City of Sandy Water Treatment Plant
      • Mt. Tabor Reservoir No. 5 Cap Study
      • Oakridge Water System Improvements
  • Staff
  • Resources
  • Careers
    • Geotechnical Engineer
  • Contact Us