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Heavy Structural

Knight Construction and Supply, Inc. has extensive experience working on the large hydraulic steel structures and associated actuators controlling the water flow and barge traffic on the dams of the Pacific Northwest river systems. Our team of management, engineering, supervision and skilled crafts personnel have the experience to complete your project to the highest quality.  Our goal is to complete each project safely, on time, within budget and in accordance with the plans and specifications.  Our customer's long term satisfaction is the key to our success.  We are proud of the fact that we have never been assessed liquidated damages.  Call us to discuss your upcoming construction needs.

Below are pictures from some of our current and recent projects:

Installing new end frame and trunnion pin.  CIP trunnion bushings were installed with epoxy.

Gate end frame in place and field painted.  Installing new gate seals.

Gate Hoists and wire rope connections.

In 2008, a barge knocked the 200 ton upstream navlock gate out of its slot, which broke the friction drums from their foundations and snapped the counterweight cables, dropping and destroying the counterweights on both ends of the gate.  The Portland USACE awarded the emergency contract to Knight to repair the damaged equipment.  This work needed to be completed as quickly as possible to minimize the huge costs to the local economy and barge traffic.  See the letter of commendation from Colonel Steven R. Miles, PE, Portland District USACE commander.  As noted in the commendation letter, this project was featured in the National Geographic Society's "World's Toughest Fixes".  Click on the link below to see this video.

http://video.nationalgeographic.com/video/player/national-geographic-channel/full-episodes/worlds-toughest-fixes/ngc-columbia-river-dam.html


John Day Upstream Gate, Counterweight and Friction Drum Installation.

Part of the Foster Dam Gate Repair project included modifying the seal configuration on the 45' long stoplogs.  This was completed at our 120' x 200' x 50' fabrication shop in Deer Park.