Travel over Hells Canyon Dam Restricted Sept. 27 and Oct. 3-5

HELLS CANYON DAM — The road over Hells Canyon Dam will be closed to vehicle traffic on the afternoon of Sept. 27 and all day Oct. 3-5 while Idaho Power crews perform work on the dam.

On Sept. 27, the road will be closed to all vehicles from 12:30 p.m. to 4:30 p.m. while equipment is being tested. On Oct. 3-5, the road will be closed to vehicles from 8 a.m.-noon and again from 1–4:30 p.m. Vehicle traffic will be allowed to pass from noon to 1 p.m. each day. All times are Mountain Standard Time.

Travelers headed to the U.S. Forest Service visitor center or the boat launch area below the dam will need to plan their trips around the scheduled closures.

Traffic flaggers will be on hand for the closures. Pedestrians will be allowed to cross when Idaho Power crews determine it is safe to do so.

The closure is necessary for maintenance that requires using a crane on top of the dam to install stop logs — large beams used to control water flow.

Located 21 miles downstream of Oxbow Dam, Hells Canyon Dam is the third and last project in the Hells Canyon Complex. It began generating electricity in 1967 and has a generating capacity of 391,500 kilowatts, making it the second-largest of Idaho Power’s 17 hydropower facilities.

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 620,000 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