Site work, paving, new construction and addition to a bridge / tunnel in Maple Grove, Minnesota. Conceptual plans call for the addition of a bridge / tunnel; for the construction of a bridge / tunnel; for site work for a bridge / tunnel; and for paving for a bridge / tunnel.

Replace Bridge #90617 along Fernbrook Lane (CSAH 121) over Rush Creek in the City of Maple Grove. Purpose & Description: The existing bridge (built in 1949) consists of a cast-in-place concrete box culvert that spans Rush Creek. The structure is in relatively poor condition, and therefore, has been classified as structurally deficient. The culvert is showing evidence of cracking and spalling that has exposed the structural rebar. Routine maintenance activities are no longer cost effective in extending the useful life of this bridge; therefore, a full replacement is recommended. The proposed project will replace the deteriorating structure with a modern concrete box culvert that will be designed to provide a 75-year service life. In an effort to better accommodate people walking, rolling and biking along the corridor, it is anticipated that a wider bridge deck will be introduced. Additionally, any pavement, and drainage structures impacted by the project will be replaced in-kind. This project is located in close proximity to Three Rivers Park District's Elm Creek Park Reserve that serves as a destination for the Crystal Lake Regional Trail, Medicine Lake Regional Trail, and Rush Creek Regional Trail. As part of the Rush Creek Regional Trail Master Plan (completed in 2008), a future extension to the west was proposed. It's anticipated that a future crossing for the Rush Creek Regional Trail would be located in the general vicinity of the county's existing bridge over Rush Creek along Fernbrook Lane (CSAH 121). Preservation of this structure is key in supporting future residential development that's occurring in this area of Dayton and Maple Grove. Without additional improvements, the bridge structure will continue to deteriorate, and weight restrictions will likely be required. The project is included in the County 2026-2030 Capital Improvement Program (CIP). As of November 12, 2025, further details have not yet been identified. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.