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Project Details

OR 213: Highway repairs in Mulino

Construction Phase

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


This three-phase project on Oregon 213 (Cascade Highway South) in Mulino where a large crack across the highway was discovered in March 2017 is complete.

Impacts

Construction Impacts

October 31, 2018 Update:
This three-phase project is complete. ODOT will continue monitoring the highway with instrumentation we installed. All travel lanes are open.

Schedule

Phase 1: Temporary repairs to the highway surface completed in October 2017. 
Phase 2: Installation of more than 40 horizontal drains below the highway to help drain water from the landslide area, completed in spring 2018. 
Phase 3: Repairing the highway surface and reopening all travel lanes, completed in October 2018. 

Details

About

Highway repair work fall 2018

ODOT has designed a repair to restore the highway to its preexisting condition, before movement occurred. 

This repair will be over a larger area than previous work, between South Glenn Drive and South Freeman Road. 

Work could take up to three months to complete. During work, traffic will be directed by flaggers or a temporary signal 24/7. Once repairs are complete, all lane closures will be removed. 

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Background
In March 2017, ODOT observed cracks in the pavement on OR 213 near South Eldorado Road. ODOT used The Oregon Department of Geology and Mineral Industries, also known as DOGAMI, landslide database and conducted site investigations. Based on that research, it appears the active landslide is part of a larger group of ancient landslides originating along the southern flank of Spangler Hill.

We developed a phased approach to address the landslide and pavement conditions.

Initial repairs
In October 2017, ODOT completed the first phase of repairs to the pavement, which was aimed at strengthening the road and temporarily repairing abrupt edges running across the highway. The repairs involved installation of layers of rocks and geogrid, a strong plastic material that strengthens the road and allows some movement.

The pavement continued to shift in the areas between where the geogrid was installed. 

Drains
From January to March 2018, crews installed 40 drains below the highway that created an easier path for water to drain from the area, reducing the potential for additional movement. The drains continue to function well. 

Monitoring
We installed instruments to measure movement of the road throughout the process. We installed additional instruments after the drain work was complete. Clackamas County continues to monitor local roads. 

The instruments have shown no significant movement since March 2018. We are not anticipating any additional significant movement based on our instrumentation findings. 

We will continue to monitor the highway on a long-term basis. 

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Location

OR 213 | near South Eldorado Road

Additional Information

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 Contact

Community Affairs Coordinator
Katelyn Jackson
Email
Katelyn.Jackson@odot.state.or.us
Phone
503-731-8503

Last Updated

10/31/2018 11:04 AM

Project Number

SHHR

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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