Note the PBOT traffic advisory below (emphasis mine)..
Portland Bureau of Transportation: All traffic signals at the intersection of N Greeley and Interstate are not working because of a crash this morning. They are not expected to work until this evening. TriMet trains and buses will be accommodated as the City of Portland responds to the situation. Turns from Interstate to N Greeley are prohibited at this time
The general public may experience detours away from this intersection and use caution. The public is advised to use alternate routes and expect delays. Cyclists allowed to travel through the work zone should reduce their speed, especially those traveling downhill on Interstate.
For more information, contact:
Dan Anderson
503-823-3723
dan.anderson@portlandoregon.gov