Bridge Projects         

Many of Alaska’s major bridges were designed by PND principals. The firm designs bridges of many sizes and types including cable stayed, arch, plate girder, box girder, orthotropic, prestressed and post tension concrete, trusses and specialty bridges including move-able, floating and pedestrian. They have included some of the world’s strongest, for use in supporting oilfield modules on the North Slope of Alaska, often weighing several thousand tons. PND specializes in bridges and foundations in some of the world’s more inhospitable conditions such as extreme cold; permafrost; thick river, lake and ocean ice; up to 40 foot tides; severe earthquakes; and a wide variety of soils.