Site work for a bridge / tunnel in Sioux City, Iowa. Design plans call for site work for a bridge / tunnel.

Phase 1: This phase of the project requires the construction of a small concrete dam to divert normal flows to the newer box culvert yet still allow high flows to drain through both culverts. Much of the bottom of the older culvert is missing and will need to be re-poured with quick-form concrete to prevent future damage. During low flow periods, the old culvert will have to be cleaned mostly by Bobcat and dried out prior to pouring the concrete. Phase 2: The second phase of the project would likely extend the Bacon Creek box culvert between Gordon Dr. and Correctionville Rd. from S Alice St on the west side of the Gordon Plaza, to S Rustin St - a total distance of approximately 800 feet; An alternative option under consideration is to purchase one or two properties and re-grade the existing channel near the bridge on S Helen. The project is included in the city's 2026-2030 Capital Improvement Program (CIP). As of November 25, 2025, a design engineer has been selected. A bid schedule has not been determined. Construction is anticipated to start in July 2027. *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.