K-4 - Professional Services Agreement - Highway 6 Reconstruction - MSA

PROJECT DESCRIPTION STP-006-7(098)--2C-52 - US Highway 6 (USH 6) Reconstruction project consists of full road reconstruction from 200 ft west of Main Street, west, to the limits of the roundabout at U.S. Highway 6 (USH 6) and North Park Rd (See ATTACHMEN B – CONCEPT PLANS) in the City of Tiffin (Owner). The project length is approximately 3,800 feet. A description of the project as MSA currently understands is outlined below. 1. Reconstruction of USH 6 (Marengo Rd) from a 2-lane rural cross section to a 3-lane cross section with a shared center left-turn lane. 2. A 5’ sidewalk will be constructed on the south side of USH 6 from the beginning of the project to Tiffin City Park, near the USH 6 roundabout. 3. A 5-foot wide sidewalk will be constructed on the north side of USH 6 starting at Kimberlite St and extending east to existing pedestrian accommodations at USH 6 roundabout. 4. Installation of permanent traffic signals at intersection of USH 6 and Kimberlite St will be completed in 2024 or 2025 (by others). 5. Right-of-way acquisition is anticipated and will be acquired by the Iowa Department of Transportation (IaDOT). 6. Storm sewer design for urban section portions of project. 7. Reinforced concrete box-culvert design at three locations within project limits. 8. Extension of 12” watermain from Stephans St to Kimberlite St on south side of USH 6 and crossing under USH 6 at Kimberlite St. 9. Sanitary sewer work including extension or repair of existing system is not anticipated. 10. Soil borings with recommendations for pavement type and subsurface improvements will be conducted by project subconsultant. 11. A public involvement meeting will be required to inform stakeholders and public of project impacts. 12. USH 6 is a part of the IaDOT primary system, coordination of design elements with IaDOT District 6 throughout the project will be required. 13. Project will follow applicable sections of the Statewide Urban Design and Specifications (SUDAS) manual, IaDOT Highway and Bridge design manual, the IaDOT Standard Specifications for Highway and Bridge Construction, and standard drawings. 14. Project will be let by the IaDOT in 2026. 15. Construction of these improvements is currently schedule for 2027. 16. Construction administration and contract management will be completed by the IaDOT. 17. Construction costs will be funded by Owner and IaDOT funds under separate agreement.