Midway-Benton Rebuild

Bonneville Power Administration rebuilt the Midway-Benton No. 1 transmission line. The line was built 11 miles within the existing right-of-way, as well as a new 14.5 mile segment that is south of the existing corridor. The new segment addition was included in order to avoid sensitive culture features, with the removal of the corresponding segment as part of the project. Through the Midway-Benton Rebuild Project, the Bonneville Power Administration rebuilt the Midway-Benton No. 1 transmission line and the Benton-Othello No. 1 transmission line. Both 115-kV lines are located completely within the Department of Energy’s (DOE) Hanford reservation. BPA rebuilt the 29 mile-long Midway-Benton No. 1 line and moved approximately half the line’s length, 14.5 miles, south of its previous alignment, which will place the line adjacent to a 230-kV transmission line operated by DOE and closer to a paved road allowing improved access for maintenance. BPA also rebuilt 11 miles of the Benton-Othello line from the Benton substation to the Columbia River, where the remaining 26 miles of the line become the responsibility of Avista. Construction began January 2013 and was completed June 2013, though clean-up will continue through the end of 2013. BPA will be responsible for environmental monitoring for up to five years.”   Through the Midway-Benton Rebuild Project, the Bonneville Power Administration rebuilt the Midway-Benton No. 1 transmission line and the Benton-Othello No. 1 transmission line. Both 115-kV lines are located completely within the Department of Energy’s (DOE) Hanford reservation.   BPA rebuilt the 29 mile-long Midway-Benton No. 1 line and moved approximately half the line’s length, 14.5 miles, south of its previous alignment, which will place the line adjacent to a 230-kV transmission line operated by DOE and closer to a paved road allowing improved access for maintenance. BPA also rebuilt 11 miles of the Benton-Othello line from the Benton substation to the Columbia River, where the remaining 26 miles of the line become the responsibility of Avista.   Construction began January 2013 and was completed June 2013, though clean-up will continue through the end of 2013. BPA will be responsible for environmental monitoring for up to five years.” Normal 0 false false false EN-US X-NONE X-NONE –>

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Bonneville Power Administration 25.5 115 WA WA 2013
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
17 Operating Midway Benton
Interstate Build Start NERC ISO/RTO Country Project Partners
2013 WECC US