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Discussion: Bridges

in: Fer_Fun'k_Sake!; Fer_Fun'k_Sake! > 2016-01-06

Jan 7, 2016 5:26 PM # 
Pink Socks:
What is your bridges route?

I designed a 13.5 mile route that crosses the Ballard Locks and 5 bridges (Ballard, Fremont, Aurora, University, and Montlake). But, since I don't like running that far, I haven't run it yet.
Jan 8, 2016 6:41 AM # 
Ooo, that sounds like fun! If you have an easy way to share that, please do.

I live between the Montlake and University bridges, so just those. Burke, pretty much, on the north side and the roads that go along the south side of the canal to the south. Pretty flat.
Jan 8, 2016 7:50 AM # 
Because the Ship Canal (and its associated lakes and bays) is essentially linear and each bridge crosses it exactly once, crossing each of the five bridges exactly once will leave the runner/walker/mathematician/topologist on the opposite side of the canal. A running route that allows the runner to return home will require either skipping a bridge (or three) or crossing at least one bridge more than once (or the Locks, as Patrick suggests).

One thing that comes to mind for the Ship Canal crossings problem is that we'd want to go between the Aurora+Fremont pair and the University+Montlake pair on the north shore to avoid going around the south end of Lake Union. This means that the bridges of each pair (e.g., Locks and Ballard Bridge) are connected via the south shore.

Seven Bridges of Königsberg


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