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Project Details

OR 99E: Tunnel Illumination

Construction Phase

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

ODOT constructed improvements to the Oregon 99E vehicle and pedestrian tunnels just south of downtown Oregon City to increase visibility and safety in and near the tunnels and reduce maintenance costs. 


Traffic Impact

Construction is nearly complete. 

Most work will be done at night to minimize impacts to those using OR 99E, also known as McLoughlin Boulevard. Travelers can expect flaggers directing traffic for most nights during construction and should expect delays.
  • Short-Term Full Closures: All traffic through the tunnel may be restricted for 20-minute windows at night between 10 p.m. and 4:30 a.m., if work requires.
  • Nighttime Single-Lane Closures: Expect single-lane closures during the following times: 
    • Monday through Thursday nights from 7 p.m. to 6 a.m.
    • Friday nights from 7 p.m. to 9 a.m.
    • Saturday nights from 6 p.m. to 10 a.m.
    • Sunday nights from 6 p.m. to 6 a.m. 
    • Expect flaggers directing traffic at night, starting as early as 9 p.m. nightly.
  • Daytime Single-Lane Closures: Construction may require daytime single-lane closures weekdays from 9 a.m. to 3 p.m.
  • For People Walking and Biking: Travelers can continue to use the pedestrian tunnel with minor delays, but should be aware of surroundings and use caution when entering the work zone.
  • For people taking transit: TriMet line 33 may be rerouted at night. Visit​ for more information. 
Visit​ for traffic conditions updated 24/7. Visit the weekly construction update​ for Portland metro area construction information one week in advance.

Construction Impacts

Residences and businesses adjacent to the project may experience some nighttime noise. A required nighttime noise variance will be in place and ODOT will minimize noise whenever possible.

For concerns related to noise, use the 24-hour noise hotline: 503-412-2379


​Design: complete
Construction: January to summer 2019 (nearly complete)



Improvements in the project include:
  • ​Adding new lighting and updating old fixtures and electrical systems to improve safety and visibility.
  • Installing a variable message sign south of the tunnel to alert northbound drivers about traffic conditions in and near the tunnel before they make the sharp turn into downtown.
The project also includes closing the left turn from OR 99E onto Tumwater Drive. This will remain closed after construction to improve safety by reducing conflicts with turning vehicles and the future McLoughlin-to-Canemah Trail. Based on traffic analysis, we anticipate no increased delay for left-turning vehicles using South Second Street once Tumwater Drive is closed to OR 99E.

For questions regarding the Tumwater Drive access closure, please contact the City of Oregon City at: 503-657-0891


OR 99E | at the railroad tunnel in Oregon City

Cost and Funding

​Project cost: $2,409,344.65

Contacts & Media

The new variable message sign will be placed south of the tunnel on OR 99E.

Project Contact

Community Affairs Coordinator
Katelyn Jackson

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Last Updated

9/16/2019 11:27 AM

Project Number


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