I don't think you have an accurate view of your area. What bridge is falling apart? They just finished building the completely new 520 bridge a couple years ago, and it's perfect. The 90 also has no issues. The ferries are on-time and not falling apart. There is neverending constant roadwork on all of the major freeways. There's a huge construction project for traffic merging onto the 5 from the 520 right now. I haven't seen a single pothole on any major road in or around Seattle, including the poor side of town down by the stadium.

Edit: also, they just rebuilt the Seattle ferry terminal within the last couple of years and it's completely modernized. Personally I preferred the old one since it was bigger and had restaurants and bars to hang out in while you waited for the ferry, but that's another example of active investment in infrastructure.