M-6 - City Engineer - Report

City of Tiffin August 2, 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 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. ORGIN design will need to address those comments. With this information, MSA is moving forward with traffic analysis and concept development for this project. Based on the Iowa DOT’s comments on the Prairie Valley Development Traffic Impact Study (performed by ORIGIN Design) MSA developed a draft typical section and concept plan for the corridor that was presented to Mr. Boldt on July 21, 2022. Following the meeting, MSA updated the concept and scheduled a meeting with Mr. Mark Harle with the Iowa DOT, MSA and Mr. Doug Boldt. This meeting was held on July 25, 2022 and involved a review of the updated concepts and typical section. Mr. Harle reviewed the various DOT personnel that would be involved in the process including R/W & Utilities and Pavement Design reviews. MSA emailed Mr. Harle the conceptual plans and typical sections following the meeting. MSA will develop an estimate of probable cost once feedback from the Iowa DOT is received. With the potential for R/W and Utility impacts, however minor, the Iowa DOT assumes a project schedule as if there will be property acquisition and utility relocation required. The design and bidding process will follow IowaDOT project development and review process so design should begin in the upcoming winter months. It is anticipated that construction will begin following completion of the I-80/380 interchange. MSA recommends obtaining field topo survey this fall. This would allow for preliminary design to begin over this upcoming winter season. Preliminary Water and Wastewater Evaluation The City has provided MSA with several documents including as-built plans, operations manual and population growth projections. This information is being used to complete the evaluations. A draft report will be submitted for review within the next 2 weeks. DEVELOPMENT ASSISTANCE Shamrock Center Lot 5 Site Plan MSA has reviewed revised plans from the developer’s engineer with no remaining comments. Park Place Part 8 Developer’s engineer provided responses to previous MSA review comments along with revised plans. Additional comments were submitted to developer’s engineer on June 8, 2022. No revised plans have been submitted to MSA. Madden Addition Lot 55 OPD Developer’s engineer submitted revised design and plans for this OPD. MSA has reviewed and provided comments to the developer’s engineer on 7/26/2022. Shamrock Center Lot 3 Site Plan MSA received a new site plan for Lot 3, Shamrock Center on 7/21/2022. Site plan is currently under review. PROJECT UPDATE Page 2 of 2