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Centennial seeks easements, CDOT sign‑off for Lone Tree Creek underpass; maintenance IGA expected
Summary
Staff said the Lone Tree Creek box‑culvert underpass at Arapahoe will provide a pedestrian/bike connection under the road, requires permanent and temporary easements from two property owners and will include a maintenance IGA with CDOT to clarify city vs state responsibilities.
City staff briefed the City Council on May 13 on the Lone Tree Creek underpass project, a DRCOG TIP‑funded pedestrian and bike underpass at Arapahoe Road that will connect the civic center area across the road.
Public Works Director Jeff Dankenbrenner said the city is acquiring 2 easements from the Centennial Airport Center Association and a temporary easement from ITS Centennial LP (the Uptown Suites property) so contractors can grade and place a box culvert under Arapahoe. The north side of the alignment is city‑owned and requires no acquisition.
Design plans are under final review at CDOT, and the city anticipates advertising for bids in July. "The plans are in to CDOT right now for their final review. They're going through their November process as they call it, which is a final review process," staff said.
Staff said they will seek a maintenance intergovernmental agreement (IGA) with CDOT modeled on similar underpass agreements used at Hampton and Colorado Boulevard projects. Under the likely IGA, CDOT would maintain the structural box culvert and the city would maintain the path, lighting and pathway elements inside the culvert and the approach trail segments within the city right‑of‑way.
A maintenance IGA will come before council for approval, staff said, and the city expects construction procurement later this summer if reviews and easement acquisitions proceed on schedule.
