Crystal Valley Parkway and Plum Creek Boulevard Roundabout

To help reduce vehicle speeds and improve safety and operations in the area, the intersection of Crystal Valley Parkway and Plum Creek Boulevard will be improved with a roundabout.

Project background

Town staff reviewed a variety of roadway improvement options to identify one that meets the most elements valued by the community: high safety, low lifecycle cost, low downtime, low environmental impacts, and reliability. The roundabout option was determined to be the most effective over traffic signal and stop sign options.

The project will implement the following:

  • Improved access to the new Crystal Valley interchange from the southeast areas of Town, once constructed.
  • Bicycle lanes and improved pedestrian crossings.
  • Reduced speeds at the intersection, which assists with improved safety.

Project timeline

The roundabout design has been completed and the project is now entering into the construction phase with the following anticipated schedule:

  • Contract approval in December 2022
  • Construction begins in late March 2023
  • Construction completion in fall 2023 


Please watch for lane shifts on Crystal Valley Parkway from the fire station to Old Lanterns Parkway. Two-way traffic will be maintained, but the road will be reduced to one lane in each direction for roundabout construction.

For safety, please slow down in the construction zone and give yourself extra time to make your trip. Construction crews will be working along the roadside, with trucks entering and exiting the construction zone.

The project team has experienced significant delays due to the unprecedented amount of rain and flooding conditions during May and June. As a result, the project remained in its Phase 1 detour through the beginning of August. Phase 2 construction started Aug. 5, and is expected to last through fall.

Phase 2 construction begins Aug. 5

Phase 2. Closure map of westbound Crystal Valley from the fire station to Old Lanterns Parkway.

Beginning Aug. 5, Plum Creek Boulevard will be closed just north of Crystal Valley Parkway. Residents should follow directional signage to East Frontage Road or travel along Plum Creek Boulevard from the north as a detour. This traffic pattern is expected to be in place through fall.

Suggested detour map

Map of the suggested detours for Phase 1 and Phase 2 of construction.

Project updates

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