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Plans for extending the North Park Blocks as a Green Loop connection came under scrutiny by the Portland Design Commission on Thursday.

Commissioners held a design advice meeting for the planned parks infrastructure as a condition of the Broadway master plan, a 2019 document that governs portions of the area in Northwest Portland.

The project encompasses Northwest Glisan to Johnston streets, east of Northwest Park Avenue. City planners envision a winding, elevated path for bicyclists and pedestrians to connect the North Park Blocks to the Broadway Bridge.

The North Park Blocks would carry the Green Loop 鈥� a pedestrian-friendly and bicyclist-friendly route that will encircle the Central City.

Yet the project isn’t expected to be built for years, and the discussion Thursday was hobbled by unanswered questions regarding timing, sequencing and the feasibility of building and maintaining a linear park in the troubled Old Town Chinatown neighborhood.

Gary Datka, a Portland Parks & Recreation project manager, said construction would begin sometime after 2030.

鈥淲e would expect somewhere between 2030 and 2035 this gets developed,鈥� he said.

That raised the question of how the parks bureau should manage the area in the meantime. The properties are owned by Prosper Portland and not yet managed by Parks & Recreation.

Some of the parcels are likely to be used for laying down construction equipment, Datka said, so it doesn’t make sense to build park infrastructure before private development occurs, only for it to be damaged by construction activities later.

Portland Parks & Recreation 鈥渄oesn’t want to build a bridge to nowhere in the interim,鈥� he said.

Commissioners suggested some sort of interim park use would be appropriate.

鈥淚t really has to be an interim park,鈥� Chairwoman Chandra Robinson said.

Commissioner Zari Santner cautioned that Parks & Recreation must prepare now to maintain the linear park before it’s built.

Santner suggested a public-private partnership could be used to maintain the area.

鈥淭hat is something very, very fundamental that the parks bureau needs to address at this time,鈥� she said.

The bureau 鈥渉as never had the funding to take care of urban parks,鈥� Santner said.

The design itself, from Portland landscape architecture firm PLACE, drew praise and concerns.

鈥淭he ascent, the massing, for me it works,鈥� Santner said.

She criticized other aspects of the design, saying railings play too large a role and compete with tree plantings.

Designers heard from community members that the path design should provide adequate separation between pedestrians and bicyclists. The design accomplishes that with dividers, planters and other cues, PLACE designer Miguel Camacho-Serna said.

The ascending pathway will create room for a roughly 4,000-square-foot retail space underneath, Camacho-Serna said.

Commissioners urged designers and city staff to find ways to make the park work.

鈥淭here’s so much beautiful space for passive enjoyment, but the space for active enjoyment is maybe a little bit missing,鈥� said Commissioner Sarah Vaz, who suggested food carts or small shops could help.

鈥淚t depends on how it’s going to be programmed and what the active uses are around it,鈥� she added.

Also on Thursday, design commissioners appointed new officers. Robinson was named chairwoman, and Joe Swank vice chairman. Votes for both positions were unanimous.