Union workers and management for BART, the San Francisco-area rapid transit system, reached an agreement early Tuesday morning to end a five-day strike that crippled the transit network and caused massive delays for commuters.

BART and union leaders both confirmed that trains were running Tuesday morning, with BART's Twitter account (@SFBART) also notifying riders to expect a 30-45 minute delay.

"We are pleased to announce that we have reached a tentative agreement with union leadership that will bring the trains back into service, starting tomorrow, while union members consider the agreement and vote on it," BART General Manager Grace Cruncian said in a statement on BART's website.

"Our thanks to all of you in the public for your patience through this very difficult process."

The five-day strike forced Bay Area commuters to scramble for alternate modes of transportation. 

BART is the nation's fifth-largest transit network, servicing more than 400,000 commuters per day between San Francisco, Oakland, Berkeley, and San Jose.

Reach Executive Producer Colin Hale here. Follow him on Twitter.