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I-84 Construction: Farley Slide

Farley Slide Project 

The Oregon Department of Transportation (ODOT) is currently designing a project to increase traveler safety on I-84, just east of Cascade Locks, at a historic landslide called "Farley Slide." This project will address the roadway problems on a 300 foot section of I-84 caused by this active landslide. 

This website will be updated the project progresses.  Sign up for the email list to receive project updates. ​

Project Description

The project will improve safety and reduce annual roadway maintenance by stabilizing the landslide.​ The landslide has caused ongoing issues:
  • This section of I-84 was built in 1951 over a steep ravine and ancient landslide deposits. Highway fill placed in the ravine reactivated the landslide and the roadway surface requires significant yearly repairs.

  • It is anticipated that an earthquake or severe weather event could trigger significant movement of the existing landslide, causing substantial destruction of the roadway, rendering I-84 impassable.

  • In 1996, during a severe weather event, a 100-foot long by 40-foot wide sink hole opened up in the center median of I-84 in the project location.​​

This project will:​
  • Stabilize the landslide before another catastrophic event requires I-84 closures.
  • Construct a retaining wall that will stabilize the landslide and have a finished look that will blend into the surrounding geology.
The wall will be below the north side of the highway and will not be noticeable to the casual visitor traveling I-84. The proposed retaining wall itself will be obscured by existing landscape when viewed from the Columbia River.

​Project Location

The project area is located at milepost 48 on I-84 in Hood River County, east of Cascade Locks.

Anticipated Project Timeline

Project Design and Contractor Selection:  October 20​16 - July 2017*
Construction:  Fall 2017 – Fall 2018*

* Schedule is subject to change due to weather, site conditions​, crew/material availability

Project Documents

Construction Impacts

Once construction begins, the public can expect the following impacts (more details will be posted here closer to construction):
  • Two lanes in each direction will be open on I-84 during construction except for required short-term lane closures.
  • A bike detour route will be maintained during construction. 
Once construction begins, up-to-date traffic impacts and information can be found on the project web site. The project will be coordinated with other projects on I-84  to ensure travelers can easily access information, as well as allowing for freight to utilize the corridor unimpeded.

Learn more about other projects on I-84. ​​

How can I get more information?

You can contact Susan Hanson, ODOT Community Affairs Coordinator if you have questions or comments about this project during regular business hours at 503-731-3490 or Susan.C.Hanson@odot.state.or.us​

¿Hablas español?Podemos proporcionar la información de esta publicación en español. Para recibir información por favor llame al 503-731-4128.​​
For ADA (Americans with Disabilities Act) or Civil Rights Title VI accommodations, translation/interpretation services, or more information call 503-731-4128, TTY 800-735-2900 or Oregon Relay Service 7-1-1.​​​​​​​​​​​​​​​​​