Kayana Szymczak for the Boston Globe

A proposal to turn this section of Storrow Drive into parkland is modeled after the downtown park in Post Office Square.

Kayana Szymczak for the Boston Globe

The Massachusetts Eye and Ear Infirmary wants to replace surface parking spaces currently split into separate areas by Storrow Drive with an underground garage.

Kayana Szymczak for the Boston Globe

As part of the plan, the hospital seeks to construct a 180,000-square-foot addition to its headquarters.

Kayana Szymczak for the Boston Globe

Completing both projects would allow Mass. Eye and Ear to add more than 250 permanent jobs, the hospital said.