The lighting is a little off. I know you want to make a bright map, but if you use pointlights for those lamposts and center the original downward, it would look a lot better.
Also, you seem to have a LOT of lights intersecting, and that will kill performance. Try using one light for the sun, and then use the suns position to cast the light in the oposite direction, thus creating a nice sun light, but with minimal lights. The map will look bright, but dim, like a sunset, or dusk.
Try vewing the the iddev readme for info on all sorts fo tricks, or, you can jsut open the "monorail" map from doom 3 and see how they did the lights.
Mix ambient lights with good point light useage and a nice directional sun, and you will be on to a winner.
http://www.iddevnet.com/doom3/