The I-5 Corridor Reinforcement Project is a 79-mile, 500-kV transmission line, originating at Castle Rock, Washington, and terminating at Troutdale, Oregon. The transmission line, proposed by Bonneville Power Administration (BPA), will cost approximately $459 million and is scheduled to be energized in 2018. The project will increase capacity and relieve congestion in the Longview, Portland and Vancouver areas. It will also serve point-to-point transmission service requests. Three alternative routes were originally estimated to cost $363M, $406M and $407M respectively. A decision on this project is expected in late 2016.
|Project Sponsor||Line Miles||Voltage (kV)||From State||To State||Year in Service|
|Bonneville Power Administration||79||500||WA||OR||2018|
|Estimated Costs ($M)||Voltage Type||Project Status||Project Group||Origin Point||Destination Point|
|Interstate||Build Start||NERC||ISO/RTO||Country||Project Partners|
|2016||WECC||US||BPA and US Department of Energy|