The first phase of construction under the McLoughlin Boulevard Enhancement Plan extends from 10th Street north to 15th Street and includes the entire improved width of the street. The Phase One boundary extends further north up the east side to include the closure of the northbound McLoughlin Boulevard approach to the northbound I-205 onramp and construction of new curb and sidewalk from 15th Street north to the remaining northbound on-ramp. Phase One also includes the Railroad Avenue intersection improvements described in Segment 1.

If ODOT’s proposed replacement of the viaduct and bridge from 8th Street to 10th Street occurs as planned, concurrently with Phase One of the McLoughlin Boulevard Enhancement Plan, then the Phase One boundary can be extended south to 8th Street. This will allow construction of southbound left-turn lanes; median refuges and pedestrian crossings at 8th and 9th Streets; and wider sidewalks. However, the new viaduct and bridge must be approximately 20 feet wider than existing to accommodate these improvements.