City Engineer’s Report

City of Tiffin November 26, 2025 PROJECT UPDATE MSA is looking for direction on the following: 1. Fully signalize Croell Ave (Option 4)or install only unground infrastructure and construct offset right turn lane for NB Croell Ave traffic (Option 1) 2. Pursue investigations internally and with IaDOT and suitability for HAWK Signal at Stephens St. SYSTEMWIDE SANITARY SEWER MODEL – ERIC THOMPSON MSA has updated the sanitary system alignments in GIS to best match the best available plansets. An MSA surveying crew will visit select locations with bidirectional flow and/or questionable inverts. Efforts are underway to finalize the dry weather flow calibration, and the existing pipe network is being put into PCSWMM for initial model runs (to be revised with information gathered during the field survey). Once the final inverts are populated within the model, wet weather calibration will commence. Preliminary results will be shared with the City at that time. NORTH PARK ROAD IMPROVEMENTS – JAMES WATTERS Iowa DOT winter work began on November 15 th. This is the period in which work may be performed on projects without the charging of working days if the project contract permits. Boomerang has not indicated that they intend to work during the 2025/2026 Winter season, and no new work has been performed on site. Installed erosion control measures discussed and agreed-upon in October are in place and functioning appropriately. MSA staff will continue to monitor the site and conduct weekly erosion and traffic control inspections throughout the winter. Boomerang will be notified if any corrective actions are needed to maintain compliance with permit requirements and traffic safety. Payment Applications will be submitted each month throughout the winter when/if work has been done. If no work is done, the City will be informed that no Payment Application is required. VILLAGE DRIVE & ROBERTS FERRY ROAD SIGNAL DESIGN – CHAD WAGNER MSA has completed the preliminary operations analysis, which is currently under internal review. A meeting with the City has been scheduled for early December. Preliminary signal pole locations and signal head placements are being discussed based on the study’s initial findings. PROJECT UPDATE Page 2 of 5