The original Martin Luther King, Jr., Boulevard (Union Avenue) portion of the structure was built by Hoffman Construction Company of Portland in 1936, at a cost of $459,000. This Roosevelt-era Works Progress Administration project brought many needed jobs to Portland-area residents. The Grand Avenue couplet was added to the viaduct in 1965. The viaducts provide Oregon Route 99E with a grade-separated crossing over the Union Pacific Railroad tracks.
Information from the Oregon Department of Transportation MLK Viaduct Project Website, August 2008
Length of largest span: 60.0 ft.
Total length: 1,639.2 ft.
Deck width: 48.2 ft.
Union Avenue Viaduct
Approximate latitude, longitude
+45.50583, -122.66083(decimal degrees) 45°30'21" N, 122°39'39" W (degrees°minutes'seconds")
OR 02115 (Oregon Dept. of Transportation structure number)
BH 37252 (Bridgehunter.com ID)
Inspection report (as of January 2010)
Overall condition: Poor
Superstructure condition rating: Serious(3 out of 9)
Substructure condition rating: Serious(3 out of 9)
Deck condition rating: Serious(3 out of 9)
Sufficiency rating: 2 (out of 100) View more at BridgeReports.com
March 23, 2011: New photos from Michael Goff
August 20, 2008: Added by Michael Goff
Mike Goff - michael [dot] goff [at] hotmail [dot] com