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Project Details

OR 213: Highway repairs in Mulino

Construction Phase

Region 1: Portland metro and Hood River County (Molalla, Clackamas)

The second phase of repairs is underway on Oregon 213 (Cascade Highway South) in Mulino where a large crack across the highway was discovered in March 2017.


Construction Impacts

June 1, 2018 update: No construction activities are occuring. Apart from occasional work on the highway, we plan to leave one lane in each direction open on Oregon 213 at the landslide area until pavement repairs are complete. 

In the coming weeks, utility companies may be on site. Traffic may need to be directed by flaggers for this work. 

We will continue to monitor pavement conditions and will close lanes again if needed for safety. 

An enforceable speed reduction to 45 mph is in place. 

Clackamas County opened Eldorado Road at its southern intersection with OR 213 as of April 20. 


Phase 1: ​Repairs for the highway surface were complete in October 2017.
Phase 2: Work to install horizontal drains below the highway to help drain water from the landslide area is complete. 
Phase 3: Pavement Repair (upcoming)



Crews have installed all 40 planned drains to relieve water pressure under the highway. Crews also installed two additional drains in the southern location. The drains are continuing to function well and draining significant volumes of water. 

We installed geotechnical instrumentation so we can monitor the landslide area long-term. 

We are also developing plans for a more permanent pavement repair now that the drains are in place. The repair will likely take place later this year. 

Pavement has shifted at the site of an ancient landslide that reactivated last winter on Oregon 213 – Cascade Highway South – Near South Eldorado Road in Mulino. 

ODOT developed a two-stage plan to address the landslide and the resulting pavement damage. Crews are currently working on the second phase of repairs. 

The first phase of repairs is complete --
Beginning August 23, crews will excavate 5 feet down from the roadway to repair several sections of the highway near South Eldorado Road. 

An estimated 3,000 cubic yards will be excavated – enough to fill 200 single dump trucks. 

The contractor will insert layers of rock and geogrid, a material used to reinforce the highway base, and pave the surface.

The crack across the highway developed as an ancient landslide reactivated during record-setting rains over the winter. Later this year, ODOT plans to install horizontal drains below the highway to help drain water from the landslide area. 
The second phase of work began in January 2018 --
The second phase of work is scheduled for this winter and will address the landslide. The contractor will install horizontal drains below the highway to help drain water from the landslide area. Illustration showing the drains installed below the highway.

In a landslide, water acts as a driving force. Installing drains creates an easier path for water to drain from the area, reducing the potential for additional movement. 

The installation process for the drains creates high water pressure, a source of landslides. The contractor will work from below the highway to install drains while monitoring the slide area and minimizing movement. Some movement of the slide area is expected. 


OR 213 | near South Eldorado Road

Additional Information

​Clackamas County has reopened Eldorado Road at its southern intersection with OR 213 as of April 20, 2018. 

For questions about Eldorado Road, please contact Ellen Rogalin from Clackamas County at 503-742-4274.

The county has provided a handout for residents with resources. View the handout. You can also view a "Homeowner's Guide to Landslides" and a fact sheet​ about landslides in Oregon. 

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.

¿Hablas español? Podemos proporcionar la información de esta publicación en español. Para recibir información por favor llame al (503) 731-4128.​

Maps & Media

This image shows traffic impacts and "bump" signage on OR 213.

Project Contacts

Community Affairs Coordinator
Katelyn Jackson

Community Affairs Coordinator
Kimberly Dinwiddie

Last Updated

6/19/2018 10:41 AM

Project Number


Project Documents

Related documents to this project
County-Info-1.26.18-SHHR.pdfClackamas County distributed this handout to residents in the immediate proximity of the landslide.
Handout-1.26.18-SHHR.pdfThis project fact sheet provides a brief overview of repairs, current conditions and future plans. Accurate as of Jan. 26, 2018.
Landslide-Handout-Feb-2018-SHHR.pdfThis handout explains the current drilling activities and provides background on the landslide. This handout was provided at the open house on Feb. 13.
Open-House-Displays-SHHR.pdfView the display boards from the Feb. 13 open house.

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