LOCATION HYDRAULIC REPORT

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1 Draft LOCATION HYDRAULIC REPORT Florida Department of Transportation District One US 41 at Fruitville Road (CR 780) Intersection Improvements - PD&E STUDY Sarasota County, Florida Financial Project ID No.: ETDM No.: The environmental review, consultation, and other actions required by applicable federal environmental laws for this project are being, or have been, carried out by FDOT pursuant to 23 U.S.C. 327 and a Memorandum of Understanding dated December 14, 2016 and executed by FHWA and FDOT. Prepared by: Parsons Transportation Group, Inc. 201 East Pine Street Orlando, FL August 2017

2 Page i DRAFT PRELIMINARY ENGINEERING REPORT Professional Engineer Certificate I hereby certify that I am a registered professional engineer in the State of Florida practicing with Parsons Transportation Group, Inc., a corporation authorized to operate as an engineering business, Certificate of Authorization No. 1838, by the State of Florida, Department of Professional Regulation, and Board of Professional Engineers. I have reviewed or approved the evaluation, findings, opinions and conclusions as reported in this Location Hydraulic Report. The Final Location Hydraulic Report includes a summary of data collection efforts and assessments for. I acknowledge that the procedures and references used to develop the results contained in this report are standard to the professional practice of civil engineering as applied through design standards and criteria set forth by the federal, state, and local regulatory agencies as well as professional judgment and experience. Parsons Transportation Group, Inc. 201 East Pine Street, Suite 900 Orlando, Florida Phone: Fax: Signature: Name: Murray B. Santoro, P. E. P.E. Number: Date: August 27, 2017

3 Page ii DRAFT PRELIMINARY ENGINEERING REPORT TABLE OF CONTENTS PAGE EXECUTIVE SUMMARY 1 SECTION 1 - PROJECT DESCRIPTION Project Description Corridor Description Purpose and Need Alternatives Considered No-Build Alternative Build Alternatives Traffic Signal Improvement Alternative Lane Roundabout Alternative (Interim) Partial 3-Lane Roundabout Alternative (Ultimate) 4 SECTION 2 FLOOD PLAINS & FLOODING 5 SECTION 3 CONCLUSIONS 6 APPENDICES Appendix 1 FEMA MAP

4 DRAFT PRELIMINARY ENGINEERING REPORT Page 1 EXECUTIVE SUMMARY

5 DRAFT PRELIMINARY ENGINEERING REPORT Page 2 SECTION 1 - PROJECT DESCRIPTION 1.1 Project Description The Florida Department of Transportation (FDOT) is conducting a Project Development and Environment (PD&E) Study to evaluate intersection and multimodal improvements to US 41 at Fruitville Road (CR 780). The limits of the project extend along US 41 from 1 st Street through the intersection to 5 th Street. The proposed improvements include replacing the existing intersection and drainage structures with the development of an interim 2-lane and an ultimate partial 3-lane roundabout with an appropriate stormwater collection and conveyance system. The project is located at the US 41 and Fruitville Road intersection in Sections 19, 24, Township 36 South, and Ranges 17, 18 East, Sarasota County, Florida. Figure 1-1 Project Location Map

6 DRAFT PRELIMINARY ENGINEERING REPORT Page Corridor Description US 41 is considered a major north-south transportation corridor that connects the cities of Bradenton, Sarasota, and Manatee and Sarasota Counties, within the limits of this project. US 41 is also designated as a primary hurricane evacuation route, a Florida Scenic Highway and a Multimodal Emphasis Corridor (MMEC). US 41 is primarily a four-lane un-divided major arterial roadway south of Fruitville Road save approximately 50 feet north of 1 st Street where the existing 8-foot-wide median ends. US 41 is primarily a five-lane undivided major arterial roadway north of Fruitville Road. 1.3 Purpose and Need Currently, US 41 is a major roadway with high traffic volumes that will not adequately handle the existing and future traffic demands of this growing area without roadway capacity improvements. In addition, US 41 acts as a barrier for residents and visitors between Downtown and the Sarasota Bay waterfront. For this study, the Department is evaluating improvements to the intersection at US 41 and Fruitville Road that would accommodate all modes of travel and provide for a better integrated multi-model transportation system. The purpose of this project is to conduct a feasibility analysis for roadway and intersection alternatives to be analyzed and documented in the PD&E Study that minimize impacts to the natural, social, economic, cultural and physical environment. Alternatives considered include: 1) a No-Build Option, 2) modifications to the existing signal, 3) a 2-lane roundabout and 4) a partial 3-lane roundabout configuration. Furthermore, the analysis will also include multimodal enhancements such as bicycle accommodations on a minimum 10-foot wide shared used path located on the west side of US 41 and a concrete sidewalk on the east side. This project is one of several projects along US 41, identified within the City of Sarasota Downtown-Bayfront Connection study, with the overall goal of improving connectivity between the Bayfront and downtown Sarasota with an emphasis on pedestrian comfort and speed control.

7 DRAFT PRELIMINARY ENGINEERING REPORT Page Alternatives Considered Four Alternatives were developed and considered during the preliminary engineering phase of this study. A No-Build Alternative and three build Alternatives, a brief description of each are described below. 1.5 No-Build Alternative No improvements are made to US 41 within the limits of the study. 1.6 Build Alternatives Each of the three build alternatives include a 10 (minimum) wide shared-use path on the southbound (west side) of US 41 and connections through the intersection to the existing bike lanes on Fruitville Road, a 5-6 width sidewalk on the northbound roadway (east side) and stormwater runoff collection and conveyance systems Traffic Signal Improvement Alternative Reconstruct the existing Traffic Signal to accommodate additional turn lanes for the NB, SB and WB directions. This alternate closely matches the existing intersection profile with insignificant impacts to the surrounding ground elevations. It would also include the expansion of the existing closed drainage system to accommodate the additional turn lanes Lane Roundabout Alternative (Interim) This alternative increases the functionality of the intersection by replacing the existing intersection with a 2-lane roundabout. This intersection improvement alternative will actually decrease the total amount of impervious area; however, the design will require the roadway profile to be 1-2 feet above the existing grade. This alternative will include additional drainage structures for the collection and conveyance of stormwater runoff from the 2-lane roundabout into the existing drainage system Partial 3-Lane Roundabout Alternative (Ultimate) This alternative increases the functionality of the intersection by replacing the existing intersection with a Partial 3-lane roundabout. This intersection improvement alternative will decrease the total amount of impervious area; however, the design will require the roadway profile to be 1-2 feet above the existing grade. This alternative will include additional drainage structures for the collection and conveyance of stormwater runoff from the 2-lane roundabout into the existing drainage system.

8 DRAFT PRELIMINARY ENGINEERING REPORT Page 5 SECTION 2 FLOOD PLAINS & FLOODING Floodplain areas were identified within the study are using the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map (FIRM). The FIRM map number is 12115C0133F for Sarasota County, Florida with an effective date of November 4, The existing intersection improvements are located entirely within the Sarasota Bay Coastal Watershed, designated as Zone AE with a 100-year base flood stage elevation of 10.0 (please refer to the FEMA Map in Appendix 1). Minimal floodplain encroachment is anticipated with the proposed US 41 and Fruitville Road improvements. It is anticipated that the only impact to the existing Sarasota Bay Watershed coastal flood zone is the fill associated with the change in the roadway profile grade related to the proposed intersection roundabout. The net encroachment into the flood plain should not adversely affect the conveyance, storage, water quality or adjacent lands. The project is located within the Sarasota Bay Watershed coastal flood zone; therefore, floodplain compensation is not required. In accordance with t h e FDOT s PD&E Manual, Part 2, Chapter 13, Floodplain Statements, the corridor has been evaluated to determine the impact of the proposed hydraulic modifications and estimated floodplain impact. The Recommended Alternative can best be described as Minimal Encroachments. Minimal Encroachments - Minimal encroachments on a floodplain occur when there is floodplain involvement but the impacts on human life, transportation facilities, and natural and beneficial floodplain values are not significant and can be resolved with minimal efforts. Normally, these minimal efforts to address the impacts will consist of applying FDOT s drainage design standards and following the WMD s procedures to achieve results that will not increase or significantly change the flood elevations and/or limits.

9 DRAFT PRELIMINARY ENGINEERING REPORT Page 6 SECTION 3 CONCLUSIONS The intersection improvements recommended build option is feasible. The proposed project will reduce the existing amount of impervious area, therefore reducing stormwater runoff. In addition, the improvements should not encourage floodplain development due to the local (FEMA) floodplain and SWFWMD regulations. The projects drainage design will be consistent with local County, FDOT and SWFWMD design guidelines. Therefore, no significant changes in the areas base flood elevation within the Sarasota Bay Watershed coastal flood zone should occur. Based on the information collected during this study, the proposed improvement can be categorized as a Type-5 project: Projects on existing alignment involving replacement of drainage structures in heavily urbanized floodplains. Replacement drainage structures for this project are limited to hydraulically equivalent structures. The limitations to the hydraulic equivalency being proposed are basically due to restrictions imposed by the geometrics of design, existing development, cost feasibility, or practicability. An alternative encroachment location is not considered in this category since it defeats the project purpose or is economically unfeasible. Since flooding conditions in the project area are inherent in the topography or are a result of other outside contributing sources, and there is no practical alternative to totally eradicate flood impacts or even reduce them in any significant amount, existing flooding will continue, but not be increased. The proposed structure will be hydraulically equivalent to or greater than the existing structure, and backwater surface elevations are not expected to increase. Thus, the project will not affect existing flood heights or floodplain limits. There will be no significant change in the potential for interruption or termination of emergency service or emergency evacuation routes. Therefore, it has been determined that this encroachment is not significant.

10 APPENDIX 1 FEMA Map

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