IA 122 RECONSTRUCTION PRE-BID MEETING December 5, 2017 10:00 AM Nick Humpal, P.E. District 2 Design Engineer
PRESENTATION OVERVIEW IA 122 Reconstruction Concerns US 65 Sites 1 & 3 Storm Sewer Design East End Rock Excavation Utility Conflicts
IA 122 PROJECT LOCATION Monroe Avenue to Carolina Avenue
PROPOSED IMPROVEMENTS Three Projects – One Contract Grade and Replace; NHSX-122-1(18)—3H-17 Traffic Signals; NHSX-122-1(19)—3H-17 Traffic Signs; NHSX-122-1(23)—3H-17
PROPOSED IMPROVEMENTS New emergency vehicle access Reducing severity of curves on east end Reconstructing Federal & Pennsylvania On-street bike lanes Improving intersections Driveway improvements/removals Sidewalk reconstruction Improving drainage
Fire Station
Reconstructing Federal Avenue & Pennsylvania Avenue
Previously Demolished 4 Homes Previously Demolished
FEDERAL AVENUE RECONSTRUCTION Site 3 (2019) 45 Calendar Days Site 1 (2018) 45 Calendar Days
FEDERAL AVENUE (US 65) DETOUR Reconstruction Detour Route
PENNSYLVANIA AVENUE RECONSTRUCTION 2019 2018
STORM SEWER Increasing number of intakes Several new pipes Adding new outlets for drainage
NEW STORM SEWER OUTLETS
5’x5’ RCB Twin 5’x4’ RCB Utilizing existing storm Sewer mains that require Unique intake structures.
NON-STANDARD INTAKE 5 Single Open Throat 2 Double Open Throat Existing Main 5 Single Open Throat 2 Double Open Throat
ROCK EXCAVATION 3,110 CY anticipated Estimate based on old city sanitary sewer rock profiles on WB lanes Quantity double for EB lanes
UTILITY CONFLICTS Alliant Energy – Electric Alliant Energy – Gas Mostly relocated prior to project Minor coordination, not all poles will be removed Alliant Energy – Gas Coordination required for abandoned under pavement CenturyLink 48 known conflicts (Utility Bid Attachment)
UTILITY CONFLICTS Cerro Gordo County - Fiber ITC Midwest - Electric Impact to P-324 & I-324 Western Edge to assist with installation ITC Midwest - Electric Relocated Iowa Hospital Association - Fiber
UTILITY CONFLICTS Mediacom City of Mason City Working with Alliant Energy Plan to be relocated prior to project City of Mason City Water main work in plans Sanitary Sewer work in plans Lighting work in plans
CONSTRUCTION Spring of 2018 – 11/20/2018 Spring of 2019 – 11/26/2019 Temporary pavement Eastbound curves, medians at Monroe & Carolina Construct westbound lanes Construct 4-lanes, Massachusetts to Carolina Two-way traffic on eastbound lanes Spring of 2019 – 11/26/2019 Construct eastbound lanes Two-way traffic on westbound lanes
CONSTRUCTION 2018
EAST END STAGING Existing lanes left in place To provide adequate drainage.
CONSTRUCTION 2019
SCHEDULE July 2017: Utility Relocations Began September 2017: Right-of-Way Acquisition October 2017: Final Design Complete December 19, 2017: Project Letting 2018: Westbound Construction 2019: Eastbound Construction
? THANKS!