Does the new “tied arch” bridge on Halsted encourage speeding?

[flickr]photo:7303499664[/flickr]

Approaching the new bridge from the south. Here there are two travel lanes, bike lanes and parking lanes.

When new bridges are built in Chicago, the Illinois Department of Transportation (IDOT) generally requires that they be built to accommodate projected traffic demands. The assumption is that in the future there will be more people driving than ever before, although most of us hope this won’t be the case.

So when the Chicago Department of Transportation (CDOT) rebuilt the North Damen Avenue bridge over the Chicago River in 2002, IDOT insisted that the old two-lane bridge be replaced with a four-lane, although Damen is generally only a two-lane street. But as a rule, if you give Chicago drivers the opportunity to speed, they will.

So it shouldn’t have been a surprise that as soon as the new bridge opened, motorists took advantage of the new half mile of wide open space between stoplights at Fullerton and Diversey to put the pedal to the metal. The speeding cars, plus the fact that bike lanes weren’t included in the project, turned a formerly bikeable bridge on a recommended bike route into a hostile environment for cyclists.

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