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Dogleg Bridge   2 comments

As mentioned in my previous posting, the Old Chain of Rocks Bridge is quite unique as it has a dogleg [20-degree bend] right in the middle:

bridge

A Bridge with a Dogleg

The reason for this unique feature: the planners had to allow for

  • a 90-degree angle for barges passing underneath, directly into or with the flow of the Mississippi, and
  • putting the foundations on solid rock.

For more information about this bridge check out „RailTrailsRoadTrip – Day 7 [ Old Chain of Rocks Bridge]“ in my blog „Pit’s Fritztown News„.

 

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