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1-5:Aurora Donald Interchange(Exit 278) <br /> Interchange Area Management Plan for Marion County Approval <br /> ODOT KN19062 <br /> Oregon Department of Transportation—Region 2 <br /> 041 <br /> c11 r:a,Au07pp <br /> ---- <br /> ,,/ 041W09A00ioi _ _ ` /. <br /> y _ j <br /> ' <br /> X ..` <br /> ' 041 W0901000 / <br /> oz /• r• <br /> . w / <br /> A y <br /> 041W0900900 / - <br /> m�- di1We9Aoo9ool-.," - <br /> _ I0 `� . wt... . <br /> 011bY0 /' • am <br /> a 44 <br /> 041 W0900600 :‘ ‘it <br /> l / ' <br /> y rl <br /> t 041W090090/ .,p. // / + i I <br /> .Y�r,�\ .iW0901..' • x1 44 <br /> . , rt+- alwl000n a <br /> 04 .. ! ' .. ri1..a•.`1 <br /> A.,.,, `C;1600 / / ,Q4,w09 a1W1001700 <br /> •11. 1D4 W09C. � 441:A . 7 <br /> i 1W • 1WO�CW4 w09oC00'._ a1W09D.!, .N . <br /> .t _..-. bI11W i:.•.i102 .. I <br /> ..'-I <DC` 109 1 <br /> 00 <br /> +1, 4 <br /> r ( _ <br /> i / ,1 <br /> r: eYlwlwa.< <br /> aiW1600100 a1W'600100 1W15.. <br /> 041 W 1600600 ( 5/ -— ,. <br /> 0�1W1 ••. . 041W1500400! . / / . <br /> i. <br /> Al p6p - _/a1W1600900� a1 / 012W ' <br /> w166, 41w1soas:a <br /> Parametrix AMP Study Area <br /> Taxlots <br /> ua <br /> Q Interchange District Zoning I-5 Aurora-Donald Interchange <br /> 11n<"'f111 al IAMP Study Area Marion County,Oregon <br /> Figure ES-1. IAMP Study Area <br /> Alternative Development and Selection <br /> The process of selecting a preferred design alternative for the Aurora Donald Interchange started with <br /> an initial set of 20 different interchange design concepts that was reduced to 9 concepts after a fatal <br /> flaw analysis. After further study and review by ODOT Region 2 and continued design refinements,two <br /> interchange design alternatives emerged: a Single Point Interchange and Diverging Diamond <br /> Interchange. ODOT conducted stakeholder and public engagement to vet the two alternatives, <br /> ES-2 July 2020 1274-3012-031 <br />