8th Street Bridge


The historic 8th Street arch bridge in downtown Sioux Falls was rehabilitated in 2020.  The structure was originally built in 1912, is 241’ long and consists of three (3) reinforced concrete arches.  To determine if rehabilitation would be possible, the bridge was first analyzed using material testing, structural evaluation, historic research, load rating, and documentation of delamination and deterioration. Project scope elements included coffer dam design, river wall and landscaping design, concrete joint repairs, extensive public and private utility coordination, and public outreach. Construction observation included being on site daily to monitor bridge rehabilitation, perform SWPPP inspections, and ensure overall compliance with the design plans and city standards.