Completion of I-25 Widening/New Plum Creek Interchange Celebrated with Grand Opening Event

The I-25 Widening/New Plum Creek Interchange project, which started in May of 2008 is now complete! CDOT and the Town of Castle Rock celebrated the completion of the I-25/Plum Creek Interchange reconstruction project at a grand opening ceremony on Friday, December 18, 2009.  Please see the News Release from CDOT for details of this event.

I-25/Douglas County Traffic Advisory for
the Week of January 26th

Drivers should expect lane and ramp closures on I-25 from Monday, January 26th through Thursday, January 29th to accommodate two widening projects on the Interstate, in northern Douglas County.   Closures will include the right lane of southbound I-25 from Exit 191 (RidgeGate Interchange) to Exit 190 (Surrey Ridge) and the ramp from Plum Creek Parkway to southbound I-25 in Castle Rock.  Please see the January 23rd Traffic Advisory from CDOT for details on the roadwork and for more information on closure times and scheduled completion.

I-25 Frontage Road Set to Open

CDOT will open the I-25 frontage road between RidgeGate Parkway and Castle Pines Parkway on Friday morning, September 4th. When opened, the outdated interchanges at Schweiger and Surrey Ridge will be permanently closed.  Please see the latest News Release from CDOT for more information.

Initial work on a frontage road paralleling I-25 between Lone Tree and Castle Rock began in December of 2008.  The new frontage road is 2-1/2 miles long and will tie into the segment currently under construction by the City of Lone Tree (see bottom of page). 

In the spring of 2009, CDOT began construction on I-25 to widen the highway from three to four lanes between Lincoln Avenue and Founders/Meadows Parkway in Castle Rock.  The widening is expected to improve safety and accommodate increased traffic volumes due to growing populations.

Both projects will require various impacts to traffic.  

New Ramp Open for Wednesday Morning Commute

CDOT will open the new ramp from Plum Creek Parkway to northbound I-25 on Tuesday night, August 25th. Additional construction will require the ramp to remain in temporary configuration for three weeks. The current on-ramp at Wilcox Street will be permanently closed. Please see the latest Traffic Advisory from CDOT for more information.

Plum Creek Parkway Ramp Reopens Monday, November 3rd

On the afternoon of Monday, November 3, 2008, CDOT officially reopened the ramp from Plum Creek Parkway to southbound I-25.  Additional ramp work may require the ramp to be fully closed again, later this month.  Please see the latest News Release from CDOT for more information on how this will affect your commute.

I-25 Widening; Groundbreaking Ceremony for Construction of the Plum Creek Interchange

On Wednesday, May 28, 2008, CDOT and the Town of Castle Rock celebrated the start of construction on the Plum Creek Interchange with a groundbreaking ceremony.  Colorado Transportation Commissioner Greg McKnight joined Castle Rock Mayor Randy Reed, Douglas County Commissioner Melanie Worley and other dignitaries to mark the occasion and turn the first shovels of dirt.  Please read CDOT's latest News Release for more information.

I-25 Resurfacing Project, Douglas Lane to Tomah Road
(This project has RESUMED.)

On Monday, May 19, 2008, CDOT a four-mile paving project on I-25 between Douglas Lane and Tomah Road (MP 175.2 - MP 179).  Drivers should expect single lane closures and delays on I-25.  For more details on when and where to expect delays, please see CDOT's latest News Release.

I-25 Widening, Douglas to 5th Street

On Monday, April 21, 2008, CDOT hosted a Public Open House to address any questions or concerns citizens had with regards to the upcoming construction project on I-25, though Douglas County.  The project includes widening on I-25 from 5th Street to Douglas Lane, as well as the reconstruction of the Plum Creek Interchange.  The Open House was held from 5:30 - 7:30 PM at the Philip S. Miller Library; thank you to everyone who came!  

If you missed the Open House, please feel free to review the meeting materials, posted below.  Also, please check the Castle Rock TAP site for additional information on this project.

Aerial view of I-25 from Douglas Lane to 5th Street; when completed:
Douglas to 5th, south end (file size: 745 KB)
Douglas to 5th, north end (file size: 935 KB)

Artist Renderings of the new interchange area:
Eastern View (file size: 280 KB)
Southwest View (file size: 220 KB)

Open House Packet: April 21st Handout (file size 2 MB)

News Release from CDOT: April 21st Open House Invite.

New Segment of I-25 Frontage Road

Construction of a frontage road segment on the east side of I-25 is underway.  The City of Lone Tree is constructing the frontage road from Schweiger to the future Ridgegate Parkway.  For more details, please contact the City of Lone Tree at 303-662-8112.

For more information on construction projects in and around Castle Rock, please see our Related Links page.