Preferred Alternative
The On-Alignment Alternative was determined to be the most feasible option as it best meets the project goals and evaluation factors. The key factors that differentiated this alternative were cost, impacts to adjacent properties, environmental considerations, maintenance of traffic and safety during construction. This alternative focuses on the bridge replacement and limits impacts along the corridor. It minimizes encroachment on adjacent properties and protects sensitive environmental resources.
The On-Alignment Alternative will utilize a full closure of 18th Street to construct the new bridge. This approach will allow for construction to be completed in the safest manner for both construction staff and travelers. KDOT analyzed detours to accommodate the full closure, and several low impact detours were determined to be viable options for travelers. The analysis indicated that travelers can expect minimal travel delay and high trip reliability during construction. More information will be provided as the project progresses.
The On-Alignment Alternative was selected because it:
- Minimizes project footprint
- Limits impacts to adjacent properties
- Protects environmental resources
- Provides highest return on investments
KDOT Project No. 69-105 KA-4881-02