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CTH A over Sioux Creek Project Profile

Barron County, WisDOT ID 8837-00-00


  • Barron County


  • Design: 11/2014-08/2016
  • Construction: 2017

Barron County, WisDOT ID 8837-00-00

This rural design project includes minor approach work and the complete replacement of the existing single-span bridge that carries CTH A over Sioux Creek. CTH A is considered a heavy-haul truck route that sees more than 100 trucks per day due to a nearby frac sand mine operated by Superior Silica. Barron County requested that CORRE look into the feasibility of utilizing Geosynthetic Reinforced Soil (GRS) abutments to reduce the timeline for construction.


  • Environmental constraints identified by the WisDNR included providing a three-foot wide flat “bench” on the riprap slope of the north abutment to accommodate a small animal crossing.
  • GRS abutments are a new technology for bridge construction and required a great deal of coordination with WisDOT’s Bureau of Structures (BOS) to determine applicability, costs, implementation challenges, etc.
  • Since CTH A is a heavy-haul route, the timeline for construction was critical to minimize adverse impacts to Superior Silica’s trucking operations. A temporary bypass was evaluated in the event a conventional bridge type (i.e. concrete flat slab) would be used.


  • This project was constructed in fall of 2017.
CTH A over Sioux Creek
CTH A over Sioux Creek