I-225

Castle Rock Construction is a subcontractor to SEMA Construction on I-225 Parker to Mississippi CDOT Project. The project is not only the widening of the last stretch of I -225 from Parker road to Mississippi Avenue but also the extension of the light rail from Parker to Iliff. Another light rail project is occurring along this corridor at the same time requiring an effective coordination effort between CDOT, RTD, SEMA, CRCC and Kiewit. A few of the key elements for this project are as follows:

  • The raising of the Yale Bridge over I-225 to accommodate the light rail.
  • The crushing of the existing roadway to provide base for the project.
  • A light rail bridge over I-225 to move the light rail from the center of I-225 to the east side of I-225.
  • 258,000 SY of 12.5” dowelled concrete paving.
  • Storm water improvements
  • 25,000 feet of concrete barrier

To aid in our continual quest to improve the quality of the concrete paving, Castle Rock Construction designed an optimized concrete mix for this project. The purpose of this proportioning and mixing was to aid in the production of a more consistent concrete batch and a better platform for the concrete paver with the ultimate goal of producing a smoother ride on the concrete paving. The optimized mix is a positive factor in the production of smoother and more durable concrete pavements. The end result was a very consistent concrete being produced and very good rides on this project.
Castle Rock Construction is very conscious of sustainability and the environment. All of the old concrete and asphalt will be reused as road base or concrete rock. CRCC uses cement from Holcim US which has ground up limestone to replace a portion of the cement which in turn reduces our carbon footprint. Also flyash is used in our concrete-fly ash is a waste product from power plants.
This project when completed will be a shining example of a concrete road that provides a smooth ride and a good investment for the people of Metro Denver for 40 years to come.