Bridge Abutment from below
CD3_Pipeline Bridge 1_Banner
NPRA Development -  Nigliq Bridge
Kuparuk East Channel Breakup
Endicott Causeway_Banner
Bear Valley Railroad Bridge, OPEN CELL Bridge Abutment Replacement
Sag. River Bridge
NPRA CD3 Bridge Span Lifting
Red Dog Road OPEN CELL Bridges

Heavy Load & Industrial Bridges

PND has designed heavy-load bridges throughout the Pacific Northwest and Alaska. Its arctic bridges are largely used to support extremely heavy module loads, and many are designed and constructed in less than one year. These bridges are designed to support loads upward of 2,500 tons and withstand ice impact and high flood conditions.

Bridge design is a core competency at PND, with a number of award-winning structures designed by our staff, including awards from the American Institute of Steel Construction, the Steel Bridge Alliance, James F. Lincoln Arc Welding Foundation, Deep Foundations Institute, and others. PND has designed heavy-load bridges using a variety of materials, including timber, concrete, steel, fiber-reinforced plastic, and steel strand, all used in combination or individually as dictated by the best design practices for each site. PND's bridge expertise encompasses site and type selection, hydrology and hydraulics, geotechnical, seismic, structural design, cost estimation, construction inspection, and existing bridge evaluations. PND's experience includes soils investigations for foundation designs and the design of piles for bridge foundations and piers.

Highway Bridges
  Pedestrian & Multiuse Bridges

Railroad Bridges

Heavy Load & Industrial Bridges

Bridge Inspection & Evaluation