is it still in use?
Yes
Loop Service
. The line was formally re-branded as the "Loop Service" on September 12, 2015, when Tilikum Crossing opened to the public and began permitting streetcars to carry passengers on the route section across the bridge.
what is a loop service? A streetcar circle route how was it planned? Plans to expand the Portland Streetcar east of the Willamette River emerged in July 1997 which state is this in? Oregon who were the first inhabitants on the river you just mentioned? The Kalapuya, the Chinook, and the Clackamas did they have any trade? Yes, fur trade which flora can be found here? Black cottonwood, bigleaf maple,  Douglas fir can you please name some animals that live here? Garter snakes, sturgeon, stickleback who are the descendants of those people you mentioned previously? The Atfalati how was the street car route you mentioned previously funded? By federal funds, the city council, local Improvement District, and a combination of various other local or regional sources who constructed it? Stacy and Witbeck
wiki:10102408
Loop Service [SEP] Opening and closing of the loop
Streetcars began operating across the newly built Tilikum Crossing, but without carrying passengers across the bridge, during a two-week transitional "pre-revenue service" phase. The line was formally re-branded as the "Loop Service" on September 12, 2015, when Tilikum Crossing opened to the public and began permitting streetcars to carry passengers on the route section across the bridge.