Projects

CO 103 Bridge Reconstruction

CO 103 at Idaho Springs

The Colorado Highway (CO) 103 Bridge over I-70 reopened to traffic in February 2015. Reconstruction of each of the on-ramps and off-ramps in this interchange began in late April.

The bridge itself over I-70 will remain open to vehicles and crews will rebuild these ramps in phases to keep traffic moving through a portion of the interchange. These phased closures, their anticipated duration and the associated detours are as follows:

  • The new westbound I-70 off-ramp to CO 103 (Exit 240) will be built adjacent to the existing off-ramp to maintain access to the downtown Idaho Springs Business and Historic District.
  • Reconstruction of the CO 103 on-ramp to westbound I-70 is complete.
  • Reconstruction of the CO 103 on-ramp to eastbound I-70 is complete.
  • Reconstruction of the eastbound I-70 off-ramp to CO 103 is complete.
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