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WS Item 4 Roundabouts City Council Work Session March 18, 2008 Underground Utilities for Roundabout Project Roundabout Design Urban Design Priorities Underground Utility Options for Roundabout Project Cost Projections Discussion Project Location Map Urban Design Palette S. White Chapel Blvd. at W. Continental Blvd. S. White Chapel Blvd. at W. Continental Blvd. Dove Street at Carroll Avenue Dove Street at Carroll Avenue Dove at North White Chapel Blvd. Dove at North White Chapel Blvd. Underground Utility Priorities Joint P&Z/City Council Workshop December 12, 2007 Urban Design Plan adopted by City Council Resolution 08-004, February 5, 2008 Priority map for underground utilities Urban Design Priorities for Underground Utilities Underground Utilities Dove at Carroll $800,000 Dove at North White Chapel $600,000 Continental at South White Chapel $300,000 Preliminary Estimate $1,700,000* * Pricing includes estimates received from Oncor (TXU), Tri-County, Charter, and Verizon. Pricing does not include costs from AT&T. Underground Utilities For Roundabouts Options Do not require underground utilities Immediately fund all three locations Create three separate projects as funds become available Stage construction within a single project with utility funding assurance Defer underground utilities to a future project Underground Utilities For Roundabouts Options Do not require underground utilities Will allow roundabout construction to begin sooner Will not improve intersection appearance Additional poles will actually worsen appearance Underground Utilities For Roundabouts Options Immediately fund underground utilities at all three roundabout locations Improve appearance of roundabouts Delay start of project pending utility work Sequence construction of intersections Underground Utilities For Roundabouts Options Create three separate roundabout projects as funds become available Place utilities underground prior to construction at each location Greater control over funding demands Unable to attain economies of scale Extended construction time Underground Utilities For Roundabouts Options Stage construction within a single project with utility funding assurance Stretch out underground utility construction Greater control over utility funding Funding available in short time frame Greater control over construction sequence Limit economies of scale Longer construction time Underground Utilities For Roundabouts Options Defer underground utilities to a future project Limited delay to construction schedule Loss of improved appearance Increased cost in future without contribution from utility company Roundabouts Questions? Urban Design Priorities for Underground Utilities Underground Utilities Dove at Carroll $800,000 Dove at North White Chapel $600,000 Continental at South White Chapel $300,000 Preliminary Estimate $1,700,000* * Pricing includes estimates received from Oncor (TXU), Tri-County, Charter, and Verizon. Pricing does not include costs from AT&T. Underground Utilities For Roundabouts Options Do not require underground utilities Immediately fund all three locations Create three separate projects as funds become available Stage construction within a single project with utility funding assurance Defer underground utilities to a future project