PND Recognized Nationally for Two Alaska Bridge Designs
PND Engineers, Inc. received recognition from the National Steel Bridge Alliance (NSBA), a division of the American Institute of Steel Construction (AISC), for two separate bridge projects in the 2018 Prize Bridge Awards competition: a National Award for the Colville River Nigliq Bridge in Nuiqsut, Alaska, and a Merit Award for the Moose Run Golf Course Bridge in Anchorage, Alaska. The NSBA hosts the competition bi-yearly and awarded a total of 16 bridge projects from across the nation this year. “PND is honored to be recognized for our innovation and work on these projects,” said PND Senior Vice President Dempsey Thieman. “I am very proud that PND is the only Alaska firm to have earned a 2018 NSBA award, and especially proud to have earned two of them.”
The Colville River Nigliq Bridge, which PND designed for Conoco Phillips Alaska, Inc. (CPAI), won the National Award in the Medium Span category (longest span equal to or greater than 140 feet but less than 250 feet). The bridge acts as a gateway to the National Petroleum Reserve (NPRA), and grants access to the large industrial traffic necessary for operation of the new developments in the reserve such as CD5, GMT1, and GMT2. The bridge successfully addressed significant operational and construction issues including significant flooding events, massive ice loads and complicated soil conditions. Design addressed construction concerns such as severe winter weather, a highly compressed schedule, limited access, stringent environmental requirements, very challenging foundation installation, and logistical constraints. PCL Construction was the bridge construction contractor; Jesse Co. was the bridge fabricator; and PND provided permitting, foundation design, structural engineering design and construction inspection.
PND’s Moose Run Golf Course Bridge, designed as a Strand Bridge®, earned a Merit Award in the Special Purpose category (including pedestrian, pipeline, and airplane bridges). A Strand Bridge is a unique type of suspension system, developed by PND, which uses vertically harped and horizontal strands to form the bridge support, provide for bridge erection, and form the final hand rails. Unlike the bulky truss and beams of more conventional designs for a 200-foot-long clear-span pedestrian bridge, this unique design is highly constructible (no need for extensive temporary aerial catwalks and gantries, since the superstructure is launched into place) and provides fine architectural lines and artistic elements that complement the natural setting, while also providing visually pleasing access for use by pedestrians, golf carts and grounds-keeping equipment. Moose Run Golf Course-Joint Base Elmendorf-Richardson is the owner of this project. Swalling Construction Company was the design-build contractor with PND as the prime designer, working as a team for Frawner Corporation, which holds a term construction contract with JBER. Jesse Co. was the bridge fabricator. PND provided permitting, geotechnical investigation and design, structural engineering design and construction management/inspection.
The Prize Bridge Awards competition is conducted every other year and honors significant and innovative steel bridges constructed in the United States. Winners are chosen based on their significant innovation in U.S. steel bridge design and engineering. Awards are given in nine categories including: Major Span, Long Span, Medium Span, Short Span, Moveable Span, Reconstructed Bridge, Special Purpose, Integrated Project Delivery and Technological Advancement.
The 2018 Prize Awards were officially presented during a ceremony at the 2018 NASCC: The Steel Conference/World Steel Bridge Symposium, which was held April 11-13 in Baltimore.