BOSTON -- The tunnel trouble for Boston commuters keeps getting worse. On Wednesday, officials announced that the connector tunnel that was shut down after a deadly accident will not be opened by Labor Day.

NewsCenter 5's David Boeri reported that the news comes as the city prepares for thousands of college students to return to the city.

The Interstate 90 Connector is still closed and the westbound D Ramp to the Ted Williams Tunnel will be closed into September

"Some traffic person told me that traffic volume could go up 15 to 25 percent. What you have is people coming back from vacations and you have the students coming back to all the universities in Boston," said former Boston Transportation Commissioner Richard Dimino.

About 250,000 students are expected to converge on Boston in the next few weeks. About 620 Boston Public School buses will also return to the traffic mix.

"The initial impact (of the tunnel collapse) was pretty serious. I mean people needed to be diverted, the regional system was affected, local streets were affected. However, during the evening peak hours, local traffic conditions remained pretty serious because what we are finding is that people have to detour," said Dimino.

"No matter how much planning we can do, you have to understand that we are still in a crisis situation. We still have police officers doing the best they can to direct traffic. We have tow trucks and enforcement officers out there trying to keep travel lanes clear," said acting Boston Transportation Commissioner Tom Tinlin.

Officials said public transportation and adjustments helped the situation, but drivers should still expect some delays and detours.

"There will be a change in the traffic pattern. There will be delays that you don’t necessarily see right now. But it will not be a huge, major problem," SmartRoute's Jeff Larson said.

Commuters are still encouraged to use public transportation in and out of Boston when it is an option.