The Longwood Collective, a nonprofit that connects institutions for climate resilience projects in the Longwood Medical and Academic Area, has broken ground on a new green infrastructure project.

The Avenue Louis Pasteur Bioswale Pilot Project is designed to make one of Boston’s most flood-prone corridors more resilient to storm surges and runoff pollution.

Launched in partnership with the City of Boston and the Boston Water and Sewer Commission, with support from Simmons University, Charles River Watershed Association, and Northeastern University, the drainage infrastructure added by the project will serve as a test case for future stormwater management initiatives across the district.

Abby Oliveira, the Longwood Collective’s senior land use and sustainability planner, said the project is the culmination of several years of collaborative planning between the many partners.

The project, which broke ground on September 30 and is expected to be completed sometime this week, includes two different filtration systems. Comparative data points gathered over the next several years will help climate resilience experts understand the best case uses for each drainage system for future projects.

“There’s the above-ground rain garden, which I think most people are more familiar with, where it mimics a natural water system by filtering the water through the vegetation and soil before it reaches the groundwater,” Oliveira said. “And then there’s the below ground filtration system to reduce the pollution before it reaches the Boston Water and Sewer pipes out into the Muddy River.”

The Bioswale project is located at the Avenue Louis Pasteur intersection with the Fenway and stretches about 50 yards down the block past the entrance to Simmons’ library.

The project was partially funded through the city’s Edward Ingersoll Browne Fund, which awarded $100,000 toward its construction. Longwood Collective contributed additional funds to complete the effort.

Soil and runoff testing over the next three years will be completed through a partnership with Simmons University, Northeastern University, and the Charles River Watershed Association.

“Water testing was already done to have some pre-construction data, and then we’ll be doing testing in several different formats. Collecting data after rainfalls or heavy precipitation events throughout different seasons,” Oliveira said. “By this time next year, we’ll have two or three larger data sets that will help inform what we can do in the future. That’s where our Open Space and Resilience Framework really comes into play.”

The Bioswale project is the first major implementation of the Longwood Collective’s Open Space and Resilience Framework, a comprehensive climate resilience plan for the Longwood Medical and Academic Area. The framework serves as a guide and prioritization tool for climate resilience projects in the area, for which the collective serves as the connective tissue between the many public and private institutions invested in climate resiliency in the area.

“We look at six different focus areas for how we’re looking to gain resilience over the next 5 to 20 years, green infrastructure, our tree canopy, connecting our open space network, advancing sustainable development, expanding our beautification program and reducing fossil fuel dependence,” Oliveira said. “We convene all the different partners that are interested in this, and we can also act as project managers on a lot of this work.”