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Welcome to the City of Sioux City's Engineering Division website!  The City of Sioux City is committed to providing a safe and efficient transportation network for its residents and traveling public. City staff understands that road construction can have a significant impact on motorists and works hard to minimize traffic delays and congestion.  

This site was created to assist our citizens and provide them with knowledge relating to City road construction projects. To gain information regarding current road construction projects, please click on project titles on the left side of this screen.

The Engineering Division is responsible for large capital improvement project management, traffic engineering, bridge inspections, grant administration, paving patch projects, asphalt resurfacing projects, curb and gutter projects, ADA Ramp compliance, reconstruction projects, Right-of-Way management including Right-of Way street closures,  and GIS management of City infrastructure.  

Progress Picture 08.02.2017 (4)

Stage IV 2 10.26.2017










Permitting through the Engineering Division consists of Sidewalk/Driveway Installation and Replacement Permits, Over-Dimensional/Over-Weight Roadway Permits, Temporary Closure of Public Right-of-Way Permits, Site Grading Permits, Fiber and Utility Installation and Maintenance Permits.

 Progress Picture (3) 08.10.2017Progress Picture (8) 08.25.2017









The City is currently using (SUDAS) Iowa Statewide Urban Design and Specifications Standards and the approved City of Sioux City 2017 City Supplement.

November 25, 2019; The City Council approved the 2020Sioux City Supplement to the Specifications Manual of the Iowa Statewide Urban Design and Specifications (SUDAS).




Attached below is a summary of changes between the 2017 Sioux City Supplement and the 2020 Sioux City Supplement.

2020 SUDAS Supplemental Standard Specifications Revisions

Previous version used with current projects under construction listed below.

2017 SUDAS Supplement 

2015 SUDAS Supplement


Progress Picture 08.03.2017 (11)


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