what type of lighting is already on the bridge? my recommendation is a time
exposure with a wide aperature. i'm the farthest from a pro.

Can you put some examples up somewhere along with some text about what
you like or don't like about your shots?

You have to take the color casts of various types of lighting into
account: the bluish mercury vapor lights, yellow low-pressure sodium,
orange-pink high-pressure sodium, narrow-spectrum HID lamps, etc.  If
you're shooting digital - shoot RAW and set the color temp to your
liking later.  If you don't want to shoot raw, turn off auto
white-balance.  If you're shooting film, you can use filters to color
correct the lighting.  However, in some cases it's just best to
emphasize or use the lighting that's there to your advantage.

Always use a tripod.  Always use a moderate aperture to get good DOF.
Meter for the shadows, not the lights.  Use mirror lockup and/or a
cable release to reduce vibration from your hand or mirror-slap.  If
you can't get a good meter reading for your selected aperture, open up
the lens fully, take a reading (if possible) and then multiply that
time by two for every stop you close the lens back down.  If you don't
have a manual shutter speed that long, use "bulb" and the second hand
on your watch.  Sometimes, it really just comes down to making an
educated guess.

Not enough info.

Camera type?

Time of night?

What kind of landscape?

What was wrong with the images?

Try shooting at dawn or dusk instead of dead of night.

Rob Novak had some good comments and questions for you. Aside from his query,
you might want to use this bridge as an example, and do multiple exposures of
it, either on film, or via multiple shots combined in PS, or similar, on
digital. Shoot the bridge with the evening light, and underexpose slightly,
then wait until the lights come on and do a shot just for the lights.

Hunt

Just a late comment..  As I quickly glanced over the thumbnails, I
couldn't help but think - what are these pictures *of*?

Yes, I know it's a bridge at night..! (O:  But we've all seen pretty
bridges at night, and unless the composition is interesting, they are
just fairly boring pictures (sorry, but you said *you* didn't like them
either!).  I think before agonising over the lighting (which isn't too
bad) you need to look much more carefully at how you are composing the
images.  Rules of thirds, leading lines, unusual viewpoints, you know
the stuff... and get *everything* out of the image that is not
required.

F'rinstance, in 'target14.html', there is a really interesting vertical
pillar with strong textures - it would make a great focus for an image
*without* most of the rest of the scene.  In 'target16.html', you have
got in a lot closer to an interesting feature, and from a thumbnail
point-of-view, it's probably the only one that would attact my
interest.  But the righthand side of that shot draws my eye away -
there is just too much 'stuff' to look at, and none of it is
particularly striking.

To me, what makes an image a 'keeper' is the emotional impact thing -
there should be a 'wow', or a sigh, or some sort of 'oh yeah - I see
what s/he is trying to say..'  It could be as simple as an interesting
texture, or a dark foreboding mood, a weird shape that emerges from
structures, a striking shadow effect, maybe a single attractive
structure with the other elements in the image 'pointing' at it....
whatever - but it needs to be *something*.  I don't think it is the
lighting that is such a problem - it's more the lack of that
something..

Hope that helps, and you don't think I'm being too harsh - I don't mean
to be..  The shots are certainly a good start at night photography!

Those halos from your lens really ruin the picture.  The last one is really
good except for the halos.  Here is my best bridge pic:
http://s124954247.onlinehome.us/Edmonton%20album/slides/bridgenight.jpg
have you tried getting right down to the water?  I had to get my tripod wet
for that one.  Try some really long exposures for some cool effects of the
lights reflecting off the water.  Oh I think, but i'm not sure, if you stop
your lens down you might get stars instead of halos, I've never had that
problem with any of my lenses though, including the 18-55 kit lens.  Oh one
more bridge pic www.harryphotos.com/fireworks4.jpg