San Francisco will add police officers and sheriff’s deputies to bolster safety around BART plazas at 16th and 24th streets in the Mission District, city officials said Friday.

Mayor Daniel Lurie and District 9 Supervisor Jackie Fielder said $12.25 million in new philanthropic and state funding will finance stepped-up public safety and create more welcoming public spaces.

The plazas and nearby alleys are widely known for stabbings, shootings, open-air drug markets and sales of stolen goods. It is a particular problem for students and families at Marshall Elementary School, according to the mayor’s office.

“Every day, I see the conditions that Marshall Elementary families and Mission residents are dealing with, and every day, I am frustrated,” Lurie said in a press release. “This community deserves concrete steps that will make a real difference.”

The new investment includes $9.25 million from Crankstart, a San Francisco-based family foundation set up by billionaire investor Michael Moritz and his wife, Harriet Heyman. It will fund lighting upgrades, public safety technology and expanded civilian ambassador coverage, according to the mayor’s office.

The funding will also support added lighting at the plazas and along priority blocks and school routes and technology to help police monitor conditions, coordinate operations, and support investigations, according to the mayor’s office.

Adding to the financial support will be $3 million in state funding secured by State Assembly Budget Chair Jesse Gabriel in the state budget.

The city intends to “activate” the plazas and improve the public space, with infrastructure that can support vendors, commerce, and regular community activity, the mayor’s office said.

Additional San Francisco police are being deployed for evening operations, along with regular narcotics operations and more intensive nighttime vending enforcement, according to the mayor’s office.

The Sheriff’s Office will provide a six-month nightly deployment along the Mission Street corridor from 16th Street to 24th Street.

In addition, 16 California Highway Patrol officers have been added in San Francisco for 60 days to supplement the city’s law enforcement, the mayor’s office said.

BART plazas and stations are being cleaned every night; nonprofit partners will also conduct sweeps around Marshall Elementary to pick up syringes three times a day, with on-call response when syringes are reported, according to the mayor’s office.