Amazon on Friday released proposed designs for the second tower it plans to build at its central site in downtown Bellevue to house some of the roughly 25,000 people the company expects to employ in the city by 2025.

The tower is part of the Bellevue 600 project, a two-tower location where one 43-story tower is already under construction at 600 108th Avenue NE. The second tower will be 31 stories. The two-tower site occupies 3.5 acres between 108th and 110th avenues Northeast.

The tower complex will become Amazon’s central hub on the Eastside, housing more than 7,000 workers. The company also has been securing other office locations in the city for the expected influx of workers.

Amazon has more than 3,000 workers in Bellevue today.

Amazon said the proposed tower design prioritizes community, sustainability, and connectivity.

We want to contribute to the creation of a thriving downtown where people live, work, and visit — not just drive through,” the company said in its announcement Friday. “Both phases of Amazon’s project align with the City of Bellevue’s Grand Connection initiative by reviving the pedestrian connector and providing new public amenities.”

The planned Grand Connection is a 1.5-mile pedestrian-bikeway from Meydenbauer Bay Park, through downtown and its myriad attractions, over Interstate 405 to Wilburton and the Eastrail bike-pedestrian path. It could include a lid over I-405 for a park or some other key feature.

Other features of the second tower include an 8,000-square-foot retail and exhibition space on the ground floor with public access to new art installations and a locally operated coffee bar, Amazon said. The company also will build a 16-foot-wide “park-like walking path,” centrally located in a new outdoor plaza and garden between the two buildings. The green space will feature more than 40 varieties of native plant species.

Amazon’s new Bellevue 600 site will include more than 28,000 square feet of ground-level retail and two daycare centers. NBBJ image, courtesy of Amazon.

The second tower also will include more than 14,000 square feet of street-level retail space and a daycare center, all available to the community. Altogether, the Bellevue 600 site will have more than 28,000 square feet of ground-level retail and two daycare centers, the company said.

Amazon is pursuing LEED Gold and Salmon Safe certifications for the towers. The buildings will be fully electric — without natural gas or fossil fuel utility services — and will use graywater capture to reduce water use, the company said.

The site also will have direct access to the adjacent Bellevue Transit Center and Link light rail station. Amazon plans to build an elevated bike path on 108th Avenue Northeast, along with nearly 1,000 on-site bike storage stalls.

More than 1,700 underground parking spaces also will be included.