18th Street Viaduct

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The City of Sioux City has completed plans for a new viaduct along 18th Street, from Floyd Boulevard to Steuben Street. The proposed project will include a new 500-foot long bridge spanning the Union Pacific Railroad and Canadian National Railway railroad tracks. A segment of Hawkeye Drive and Illinois Avenue will be realigned to improve intersection geometrics. The project will result in safer and more efficient truck movements.

 City Project Manager:  Gordon Phair City Engineer 712.279.6330   gphair@sioux-city.org

Website Exhibit

2018 BUILD Grant Submission


18th St. Viaduct_Fact Sheet

 18th St. Viaduct Public Meeting Invite 6.1.18 (002) 


  2017 TIGER Grant Submission

2017 TIGER Grant Application - Letters of Support

2017 TIGER Grant Application - Benefit Cost Analysis

2017 TIGER Grant Application - Wage Rate Certificate

2017 TIGER Grant Application - Detailed Cost Estimate

2017 TIGER Grant Application


2017 INFRA Grant Submission

2017 INFRA Grant Support Letters

2017 INFRA Grant Benefit- Cost Analysis


Rail Freight Study

Rail Freight Movement and Economic Development Analysis