8th street has definitely changed a lot over the years. in the mid/late 90s, it was a ghost town compared to today.
i took some out-of-state friends to dinner at Bittercreek Alehouse last year and they were shocked at how vibrant it was...on a Tuesday night. They wondered if there was a festival or concert going on downtown or something, but there wasn't.
Sawtooth shared this picture below that shows how making 8th pedestrian-only really provides a great atmosphere.