![](/TrimIcon/w32h32/YellowBook.png)
Proposed downtown Portland highway extensions map
Tuesday, December 31, 1940
A2010-008
M/1835
Illustrates proposed highways that will become I-405 and Harbor Dr. Includes dollar amounts for proposed projects. Date is circa.
Proposed downtown Portland highway extensions map
Tuesday, December 31, 1940
A2010-008
M/1835
Illustrates proposed highways that will become I-405 and Harbor Dr. Includes dollar amounts for proposed projects. Date is circa.