Public Information Meeting NW 100th Street Reconstruction Project March 11, 2014
Introduction Thank You for Attending! City of Johnston and HR Green Staff Dave Cubit: Public Works Director Emily Price: Communications Director Chad Mason: Project Manager Mike Lyons: Project Engineer Cory Shannon: Staff Engineer Ross Harris: Transportation Planner Format of Meeting Sign-In Sheet and Comment Forms Mark
Meeting Agenda Project Purpose and Need Conceptual Design Overview Roundabout rationale Funding Schedule Questions? (Open House) Mark
Project Purpose and Need Facility Type: NW 100th Street is currently a “rural section” roadway 24 ft. pavement width Composite pavement, minimal shoulder Open ditch drainage Inappropriate section for proposed development. Need: “Urban Section” roadway with curbs, concrete paving, storm sewers and off-street pedestrian/bicycle accommodation Mark
Project Purpose and Need Traffic Capacity: Traffic Impact Study (TIS) completed in 2012, with revisions in 2013 Traffic generated by new Johnston High School (opening 2016 – full build 2020) Comprehensive Plan growth & development, Year 2037 (25-year horizon) Existing roadway is deficient. Need: Intersection Control (signals or roundabouts) Closely spaced intersections Predominance of left turns Mark
Proposed Design Concept
Why Roundabouts? Motorist Safety Pedestrian Safety Traffic Flow
Motorist Safety
Pedestrian Safety
Safety Comparison Insurance Institute of Highway Safety (www.iihs.org) 90 percent reduction in fatal crashes 75 percent reduction in injury crashes 30 percent reduction in pedestrian crashes 10 percent reduction in bicycle crashes
Traffic Flow #1 priority of Johnston citizens in recent survey Federal Highway Administration (FHWA) studies found that roundabouts improve traffic flow by 30-50% compared to a conventional intersection.
Before & After
Funding $4.3 million project cost (City estimate) Funded by General Obligation bond; cost-share between City and School District No Special Assessments Mark
Surveying, mapping, data collection Conceptual Design Preliminary Plans Easements & ROW Final Plans Bid Letting Utility Relocation Construction Nov.- Dec. 2013 Jan.- Feb. 2014 Mar. – May 2014 Jun. - Oct. 2014 November 2014 Dec. – Mar. 2014/2015 Begin April 2015 Schedule YOU ARE HERE
Questions? Continue with Open House…