Maintenance Work Will Impact Traffic over Hells Canyon Dam

OXBOW, Oregon — Traffic over Hells Canyon Dam will periodically be limited to one lane over the next several weeks while Idaho Power crews perform maintenance on the dam.

Beginning Monday, Aug. 26, motorists may experience delays between 8 a.m. and 4 p.m. Delays will usually be brief, although vehicles 8-feet wide or more may be delayed up to an hour.

Crews will be replacing spillgate cables on the dam. The work requires a large crane on top of the dam, which will reduce traffic to a single narrow lane. The project is expected to be complete by Oct. 21.

Located 21 miles downstream of Oxbow Dam, Idaho Power’s Hells Canyon Dam began generating electricity in 1967 and has a nameplate generating capacity of 391,500 kilowatts.

About Idaho Power
Idaho Power, headquartered in vibrant and fast-growing Boise, Idaho, has been a locally operated energy company since 1916. Today, it serves a 24,000-square-mile area in Idaho and Oregon. The company’s goal to provide 100% clean energy by 2045 builds on its long history as a clean-energy leader that provides reliable service at affordable prices. With 17 low-cost hydroelectric projects at the core of its diverse energy mix, Idaho Power’s residential, business and agricultural customers pay among the nation’s lowest prices for electricity. Its 2,000 employees proudly serve more than 560,000 customers with a culture of safety first, integrity always and respect for all.

IDACORP Inc. (NYSE: IDA), Idaho Power’s independent publicly traded parent company, is also headquartered in Boise, Idaho. To learn more, visit or

Brad Bowlin
Communications Specialist