1 Engineering Design Services for Safety Improvements along CR 476 from the Hernando County Line to US 301 (SR 35) Sumter County, Florida November 7, 2014 SUBMITTED BY: Dewberry Bowyer-Singleton 520 South Magnolia Avenue Orlando, Florida SUBMITTED TO: Sumter County Board of County Commissioners Office of Management & Budget 7375 Powell Road, Suite 200 Wildwood, Florida
5 Section 1: Qualifi cations
6 Qualifications Dewberry Bowyer-Singleton UNDERSTANDING OF PROJECT CR 476 from the Hernando County Line to US 301 (SR 35) in Sumter County is an existing two lane rural roadway approximately 9.0 miles in length. The adjacent development is mostly residential, and there are numerous residential side street connections to CR 476. The roadway alignment includes five horizontal curves, and one grade crossing where CR 476 crosses over I-75. There is one signalized intersection at US 301. Drainage from the roadway is accommodated by roadside ditches. Existing pavement markings along this route are thermoplastic. The project will include removing the existing centerline and outer edge line pavement markings and replacing them with wet weather audible pavement markings through the entire project limits. The posted speed limit along the project is 45 mph. No additional right-of-way is required. EXPERIENCE & STAFFING Dewberry Bowyer-Singleton has extensive experience in roadway design and construction plans preparation. Projects have ranged from intersection improvements and milling and resurfacing of existing roadways to new limited access facilities and multi-level systems interchanges. We have provided design services to the Florida Department of Transportation (FDOT) since 1985 and have served Sumter County in various capacities since Our staff is well qualified for any type of roadway design project, including safety related improvements to existing facilities. Our proposed staffing for this project includes the following key staff assignments: Project Manager, Don Hammack, PE - Don Hammack, Associate Vice President and Senior Project Manager at Dewberry Bowyer- Singleton, has over 28 years of design and management experience including alternatives development, preliminary and final designs, preparation of construction documents, construction inspection and field engineer assignments. He has a strong background in project management and design, having been involved in projects ranging from minor improvements to complex highway interchanges. Roadway/ Traffic Engineer, Jim Bradford, PE Jim Bradford, Traffic Engineer at Dewberry Bowyer- Singleton, has over 10 years of experience in a wide variety of traffic engineering and roadway engineering projects throughout the state of Florida. His areas of expertise include field traffic studies, traffic and transportation engineering, and Intelligent Transportation Systems (ITS). He is proficient in MicroStation, Guidesign, FDOT Multi-Post Sign Support software, and Microsoft Office Professional Suite. Principal-in-Charge, Rey Malavé, PE Rey Malave, Senior Associate, has over 35 years experience in civil engineering design, and a diversified background in the design and permitting of infrastructure systems as well as working for governmental agencies and developers. He has been involved with our Sumter County Continuing Services Contract since 2008 and is very familiar with the County s preferences and procedures. ABILITY TO MEET SCHEDULE Considering the timing of our current projects and pursuits, we have ample resources to commit to this project. Our projected staff commitments for the upcoming year in the Transportation group are approximately 2,500 MH/month. Our Transportation group has the capability of producing 3,300 MH/month, leaving 800 MH/month available for additional assignments, well in excess of the requirements for this project. In addition, with our minimized plan production approach (see below) we have the ability to efficiently produce the design and plans on an expedited schedule if desirable. Safety Improvements along CR 476 Sumter County 1
7 PROJECT APPROACH The primary goal of this CR 476 project is to improve safety along the corridor through the use of wet weather audible pavement markings. In order to gain an understanding of potential safety issues we reviewed the crash data for the years 2006 through The number of crashes within the project limits ranged from a high of 17 (2006) to a low of 10 (2010). The crash locations were distributed along the corridor and there was no concentration of crashes which would indicate a potential issue at a specific location. The crashes also included a number of different types of events, from rear end collisions with other vehicles to collisions with fixed objects and even animals. We also noted that there were 17 crashes with incapacitating injuries and 4 fatalities during this five-year span. Considering that the crash locations and types of events vary along the corridor, and the severity of a number of crashes, we would recommend that the County include a roadway safety audit through the limits of the project, if one has not already been performed. This activity would occur during the initial field review and would identify and document roadside conditions that do not conform to current roadside safety standards. The roadway safety audit will be performed by one of our Sr. Highway Engineers, and will evaluate roadside slopes, hazards within the clear zone that may require shielding, drop off conditions within the clear zone such as box culvert end walls, sight distance around curves and at intersections, and pedestrian and bicycle facilities where these may exist. The road safety audit will include an inventory of existing roadside signs and recommendations for replacement or additions based on current standards. The findings of the roadway safety audit will be summarized in a report format. Dewberry Bowyer- Singleton will provide recommendations to correct deficiencies identified in the report, and meet with the County to discuss the findings and recommendations. Since the existing pavement markings are thermoplastic, they will have to be removed prior to installing the audible markings. Removal of thermoplastic markings normally involves water blasting or some other mechanical method. It will be important to designate removal requirements in the plans so the resulting pavement surface is able to accept the new markings. We anticipate replacing the reflective paving markings as these are normally damaged during the striping removal. Existing passing zones will be maintained unless the County feels that a Passing Zone Study is warranted to re-define these areas. A review of the crash data did not indicate that head on collisions are common and the current passing zones may be reasonable. Dewberry Bowyer-Singleton proposes an efficient approach to the development of plans for the audible pavement markings. We recommend the locations and quantities of the audible pavement markings be provided only in summary tables and thereby reduce efforts by eliminating foot by foot plan sheets. Project Layout sheet(s) detailing project stationing and side street names will enable cross referencing of location information shown in summary tables with their locations along the project corridor. The plan set will include the following sheets: 1. Key Sheet 2. Signature Sheet 3. Typical Section Sheet 4. General Notes 5. Project Layout Sheet 6. Maintenance of Traffic 7. Summary of Quantities Sheet a. Summary Table for Audible Pavement Markings 8. Detail Sheet for Pavement Markings a. Typical Side Street Intersections b. I-75 Grade Separation c. US 301 Intersection Pavement marking design will be provided in accordance with the latest edition of the Manual of Uniform Traffic Control Devices (MUTCD) and FDOT Design Standards. Geotechnical engineering and survey services will not be required for the pavement marking design. Permitting will not be required as the minor roadway safety improvements proposed are exempt from Environmental Resource Permitting with Southwest Florida Water Management District per Section , Item 14.(c) 3., Florida Statues. Safety Improvements along CR 476 Sumter County 2
8 Sumter County Board of County Commissioners Sumter County Engineering Design Services for Safety Improvements along CR 476 from the Hernando County Line to US 301 SR 35 in Sumter County REFERENCE & SIMILAR PROJECTS EXPERIENCE FORM Owner / Business Name: Florida Department of Transportation, District Five Project Location / Address: 719 South Woodland Boulevard City: DeLand State: Florida Zip Code: Point of Contact: David Cooke, PE Dates of Work: 2009 Phone Number: Fax Number: Address: Project Name: SR 44, from US 301 to the Sumter/Lake County Line, Sumter County, Florida Brief Description of Project: The SR 44 project, from US 301 to the Sumter/Lake County line, in Sumter County consisted of milling and resurfacing, and construction of 5.5 miles of rural roadway. The project included safety improvements to the existing two-lane roadway and new construction of a parallel two-lane roadway. The existing roadway was reviewed for compliance with Florida Department of Transportation s 3R criteria. Roadway elements were brought up to current criteria, where feasible, such as reconstruction of existing vertical curves to provide adequate sight distance, and overbuilding existing horizontal curves to correct superelevation rates. Dewberry Bowyer-Singleton s services included Design Surveys, Drainage Design, Environmental Permits, Right-of- Way Maps, Roadway Design, Signalization, Signing & Marking Plans, Structural Design (soundwall), and Traffic Control Plans. Dewberry Bowyer-Singleton staff assigned to this project included Kevin Knudsen, PE, Principal-in-Charge / Project Manager, and Dan Christie, PE, Senior Roadway Engineer. Owner / Business Name: Florida Department of Transportation, Florida s Turnpike Enterprise Project Location / Address: Turkey Lake Service Plaza, Mile Post 263, Building 5315 City: Ocoee State: Florida Zip Code: Point of Contact: Becky Bolan, PE Dates of Work: Phone Number: Fax Number: Address: Project Name: Suncoast Milling and Resurfacing Brief Description of Project: The Suncoast Parkway project consisted of milling and resurfacing the northbound and southbound lanes of the Suncoast Parkway in Pasco County, from approximately MP 17.4 to MP 37.3, including median openings, shoulders, and ramps at SR 54, SR 52, and CR 578, as well as the Anclote and Spring Hill Mainline Toll Plazas. The project involved design criteria, safety and maintenance upgrades in addition to the milling and resurfacing. Criteria upgrades included cross slope corrections and reconstruction of call box pads to meet ADA requirements. Safety improvements included addition of median cable barrier system and guardrail to protect hazards in clear zone. Maintenance items included erosion protection and re-grading of ditches. Our services included Existing Roadway Conditions Report, Roadway Design, Surveying & Mapping, Drainage Design, Milling & Resurfacing, Signing & Paving Markings, Traffic Control Plans, Utility Coordination and Final Construction Plans.
9 Sumter County Board of County Commissioners Sumter County Engineering Design Services for Safety Improvements along CR 476 from the Hernando County Line to US 301 SR 35 in Sumter County Owner / Business Name: Florida Department of Transportation, Florida s Turnpike Enterprise Project Location / Address: Turkey Lake Service Plaza, Mile Post 263, Building 5315 City: Ocoee State: Florida Zip Code: Point of Contact: Pam Nagot, PE Dates of Work: Phone Number: Fax Number: Address: Project Name: Resurfacing Seminole Expressway from US 17/92 to Interstate 2, Seminole County, Florida Brief Description of Project: This project consisted of milling, resurfacing, and roadside improvements for the Seminole Expressway Northbound and Southbound from US to I-4 (approximately MP 49.8 to MP 55.0) including interchange ramps at US 17-92, CR 46A, and Rinehart Road. The work included milling and resurfacing existing travel lanes, inside and outside shoulders, and all paved UTurns Northbound and Southbound from south of the US interchange at the pavement change at MP 49.8 to the bridges over Towne Center Boulevard (MP 55.0). Improvements included constructing ground-in rumble strips and correcting shoulder drop-off along the edge of pavement, repairing of all guardrail openings for maintenance access and correcting/adjusting guardrail as a result of milling and resurfacing operations. This document must be completed and returned with your Submittal