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2017-081
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2017-081
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Last modified
5/24/2017 9:58:44 AM
Creation date
5/24/2017 9:58:38 AM
Metadata
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Template:
Official Documents
Official Document Type
Agreement
Approved Date
05/23/2017
Control Number
2017-081
Agenda Item Number
8.H.
Entity Name
Bowman Consulting Group LTD
Subject
Pavement Reclamation
Resurfacing Project
Area
58th Ave.
Project Number
2016016
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condition and proper reflectivity will be relocated to the required horizontal clearance. <br /> Signs in poor condition that are still necessary will be replaced. Existing signs that do not <br /> meet the minimum height clearance will be raised to seven feet above the edge of travel <br /> to ensure proper clearance above the paved shoulder bike lanes on both sides. All <br /> pavement markings will be replaced with thermoplastic paint once the resurfacing is <br /> completed. Where roadway modifications are necessary the new markings and signing <br /> will be designed for the new conditions. <br /> Pedestrian crosswalks will be safely designated according to the latest standards noted <br /> above. All crosswalks will have adequate signage to provide advanced information to the <br /> motorists for safety and pedestrian landing pads will be installed on all corners that do not <br /> have sidewalk connections when sidewalk is present on the opposing side. It was noted <br /> that sidewalk alignments at 75th St and 81 st St. do not meet ADA requirements and need <br /> to be realigned at the intersection to guide users into the crosswalk instead of into the <br /> intersection. We will see that the sidewalk realignments are incorporated in the <br /> construction plans. These two intersections will need the pedestrian landing pads as will <br /> all four comers of the CR-510 intersection due to the existing signal with Ped features and <br /> crosswalks and no sidewalks. <br /> It was noted that GoLine Bus Route 9 serves this roadway segment. There are several <br /> bus stops located along the corridor such as the ones at 65th St, 69th St and 77th St..These <br /> bus stops are not ADA compliant, having no boarding and alighting pads present. We will, <br /> at the direction of the County, coordinate with GoLine to advise them of this deficiency <br /> and determine their schedule for improvements to avoid conflicts with the contractor during <br /> construction. Bus stop ADA improvements are typically the responsibility of the bussing <br /> authority. <br /> Design Approach: <br /> Preliminary Engineering: <br /> We propose the project be done in two phases, Preliminary Engineering and Final Design. <br /> We recommend this approach for several reasons. First, preliminary engineering gives <br /> us the opportunity to compile all the base information, set control grades, evaluate the <br /> extent of conforms (driveway and adjacent streets) required, confirm drainage patterns <br /> and ditch clearances, identify the key issues and impacts, develop an opinion of <br /> construction cost for the various elements, and perform a complete assessment the <br /> project. This can all be done for a fraction of the total cost of detailed final design, and if <br /> portions of the project are identified as too expensive, alternatives can be looked at prior <br /> to investing in the cost of detailed design. The preliminary design phase of this project <br /> will provide for proper project development and is consistent with our QA/QC procedures. <br /> At this first stage of the project we will compile the base information and background <br /> information and set up the project. We will evaluate the budget to assess what is the <br /> realistic cost of improvements. We will work with the county to sort through the proposed <br /> improvements and recommend refinements to the project based our experience. <br /> The first design-level step is to perform the development of the engineering control plan. <br /> This is where we work with the topographic mapping and start designing the road <br /> geometrics. Mapping is critical and we will rely on the mapping provided by the county. <br /> 36 <br />
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