M-6 - Engineer Report

City of Tiffin September 30, 2022 PROJECT UPDATE Deer View Avenue and Tall DOT has requested concurrence from the City on permanent TBD Grass Avenue & Hwy 6 improvements to intersection within 5 years of installation of Intersection Improvements temporary traffic signals in 2020. Scope includes both pedestrian and vehicle accommodations. Highway 6 Concept and Cost Estimate MSA submitted conceptual plans and typical section to the Iowa DOT for review on July 25, 2022. Once concurrence of the conceptual plans is received, MSA will develop a construction cost estimate for the proposed work. The Iowa DOT provided MSA updated traffic projections for US 6 on June 14, 2022. The Iowa DOT completed their review on June 22, 2022 of the Prairie Valley Development Traffic Impact Study with comments. The Iowa DOT provided comments regarding the need for an updated traffic study at Kimberlite Street since the last one was completed in 2019 and includes outdated traffic projections and turning movements. MSA will work with the City and other firms to determine course of action to update the traffic study. Field topo survey will begin this fall. This would allow for preliminary design to begin over this upcoming winter season. Preliminary Water and Wastewater Evaluation MSA has completed the water treatment and wastewater treatment evaluations. MSA has prepared a project schedule to supplement the memo and outline when the infrastructure improvements can be designed and constructed. DEVELOPMENT ASSISTANCE Dental Office Site Plan MSA reviewed a site plan for a dental office at the NE corner of U.S. Highway 6 and Croell Avenue. MSA provided comments on to the City on September 23, 2023. Madden Addition Pedestrian Bridge MSA was provided design plans and IDNR permit by the developer’s engineer. An initial inspection of the bridge was performed the week of September 12th with several concerns identified. Correspondence with the bridge manufacturer and builder, Bridge Brothers, resulted in them providing revised plans. MSA requested several pieces of additional information from the builder. MSA received information for the builder on September 28, 2022. We are currently reviewing the information provided and will prepare a memorandum detailing any outstanding items that require resolution. Sidewalk/Trail Connection MSA will design and develop plans for a sidewalk/trail connection from the SE quadrant of the roundabout at Park Road to the soccer field parking lot. Survey is scheduled to be completed in October. PROJECT UPDATE Page 2 of 2