Barr performed tunnel-inspection services for the City of Minneapolis, including an inspection of the Highway 55 stormwater tunnel near 26th street, which discharges into the Mississippi River. The inspection included approximately 8,000 linear feet of the Highway 55 tunnel and a 600-foot lateral tunnel. Access was coordinated using two different vertical-shaft locations. Barr’s inspection included documenting identified features using National Association of Sewer Service Companies (NASSCO) coding. Barr’s work was completed and submitted to the city under budget.