There could be light at the end of the tunnel for the proposed 10th Avenue stop for the Number 7 train extension.

The Bloomberg administration is looking to re-engineer the project to allow a station to be built at 41st Street and 10th Avenue in the future.

A spokesman for the mayor says the idea is under preliminary review, but adds the city will not consider plans that add significant time or cost to the project. The second station is estimated to cost upwards of $500 million.

The city is already spending $2 billion to extend the 7 line from Times Square to 34th Street and 11th Avenue.