Question 65 - 67 refer to following paragraph:

M: Hi, Sandra. I'm so sorry I missed our meeting this morning. (65) I didn't realize the Tower Bridge was closed for upgrading. I had to go over the Brooklyn Bridge.
W: Don't worry about it Rob, (66) Most of the staff was late because of that. It's going to be annoying to have to go over the Brooklyn Bridge every day. I might just
take the Express Tunnel
M: Yeah, I know. But the traffic is just so terrible in that tunnel. I can't really handle it.
W: I agree. (67) I think we should all just take the subway until the Tower Bridge is open again

65. According to the woman, what is causing people to arrive late to work?