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Project-Details







Interstate 5 Bus on Shoulder Pilot

Construction Phase

Region 1: Portland metro and Hood River County (Tualatin, Wilsonville, Clackamas, Washington)


​​ODOT and South Metro Area Regional Transit (SMART) launched a Bus on Shoulder Pilot on I-5 between the I-205 interchange and Elligsen Road in November 2021.


Details

About

On November 1, 2021, ODOT and SMART launched a Bus on Shoulder Pilot on I-5 between Tualatin and Wilsonville.  The pilot allows SMART buses to bypass congestion and operate on a portion of I-5 between the I-205 interchange and Elligsen Road.  The pilot is evaluated for Safety, impacts to infrastructure, and transit reliability.

Buses can use the shoulder only when traffic is moving slower than 35 miles per hour.  While using the shoulder, buses can travel up to 15 mph faster than traffic, with a maximum speed of 35 mph.

Location

I-5 |

​I-5 corridor between the I-205 interchange and Elligsen Road in Wilsonville.

Cost and Funding

​Approximately $62,000 for striping, pavement legends, fabrication and installation of signs and sign structures were completed as part of a maintenance project.

Benefits

​The I-5 corridor between the I-205 interchange and Elligsen Road in Wilsonville is a major congestion bottleneck.  ODOT is collaborating with SMART to support more reliable travel by using the highway shoulder for transit vehicles if and when traffic slows below 35 mph.  Infrastructure improvements required to create this Bus on Shoulder corridor were installed in conjunction with other construction work in Summer 2021 to ensure efficient use of resources.

Allowing buses to use freeway shoulders to bypass traffic is a relatively simple tool that maximizes the efficiency of existing transportation infrastructure.  Bus riders will experience faster travel times and more reliable service, making public transportation more attractive to new riders.  This concept has been used throughout the nation for over 30 years and is a tool to reduce greenhouse gas emissions from private vehicles.

Additional Information

​For Bus Riders
Riders can take SMART Route 2X from SMART transit center in Wilsonville and from Tualatin transit center. For more information about bus service, visit SMART’s website.

For Motorists
Priority for shoulder use will always be given to emergency vehicles, incident management (e.g,. fender benders or breakdowns) and maintenance activities. If another vehicle is in the shoulder because of an emergency, buses are required to merge back into the regular travel lanes. Motorists shall obey all traffic laws and regulations. Signs and pavement markings are placed along the corridor noting that shoulder use is for authorized transit vehicles only. Signs also warn motorists when buses will be merging back into traffic at the end of the Bus on Shoulder corridor. 

Contacts & Media

Project Contact

Public Information Officer
Don Hamilton
Email
don.hamilton@odot.oregon.gov
Phone
503-731-8265

Last Updated

9/19/2023 2:15 PM

Project Number

i5BOS

Project Documents

Related documents to this project
Fact-sheet-FAQ-i5BOS.pdfLearn more about the pilot project with a handout and FAQ from summer 2021.