Dryden & LaRue has completed utilities services throughout Alaska. Specialties include: transmission, distribution, substations, inspection services, engineering reports and studies.


D&L has a statewide reputation for transmission line design and trouble shooting. Our engineering staff has direct design experience with transmission voltage from 69 kV through 345 kV.

Bradley Lake Kachemak Bay
Bradley Lake Kachemak Bay
115 kV tubular X-tower (new construction)

Quartz Creek
Quartz Creek Line Summit Lake
115 kV Wooden H-Poles
Avalanche Diverting Structures

ARCO West Sak
ARCO West Sak/Kuparuk, North Slope
35 kV Wishbone Transmission


Most of D&L’s engineering staff began their careers in the distribution field. We continue to provide distribution line design for many Alaskan utilities.

Kodiak Island
Kodiak Island
12.5 kV Cannery Feeder


University Substation
University Substation, Anchorage
Temporary Railroad to minimize outages Hartman Substation, Kodiak

Hartman Substation
Hartman Substation, Kodiak
New Distribution Feeder Bay

Hartman Substation Panel
Hartman Substation, Kodiak
Control Panel

High Substation Kodiak
High Substation, Kodiak
69 kV to 12.5 kV New Substation

Soldotna Substation

Soldotna Substation Distribution Feeder Addition

Fort Raymond Substation

Fort Raymond Substation, Seward
2500 kW EMD Diesel Generator

Petro Star Switch Station

Petro Star Switch Station, Valdez

Inspection Services

Inspection services include:

  • contract administration
  • bid document preparation & evaluation
  • document control
  • progress and cost control
  • on-site inspection
  • quality control
  • closeout documentation
  • as-built drawings

Turnagain Arm
Highway Relocation
Turnagain Arm
Rock Anchor Installation

Fairbanks Intertie
Anchorage-Fairbanks Intertie, Talkeetna Remote Monitoring of Conductor Snowloading

Engineering Reports & Studies

D&L performs investigations for both overhead and underground electric lines. Typical services in these areas include:

  • avalanche analysis
  • snow/ice loading analysis
  • line upgrades
  • planning studies
  • meteorological criteria
  • CAD specifications
  • design manuals
  • voltage drop studies
  • sectionalizing/coordination studies
  • grounding studies
  • noise investigation studies
  • feasibility studies
  • transmission relocation studies
  • metal fatigue analysis
  • construction cost estimate
  • structure performance studies
  • routing studies