Draft Design Report/ Environmental Assessment Volume I
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DRAFT DESIGN REPORT/ ENVIRONMENTAL ASSESSMENT VOLUME I PIN 0112.52 Route 110 Drainage and Roadway Improvements Prime Avenue to Young’s Hill Road Town of Huntington Suffolk County October 2007 NEW YORK STATE DEPARTMENT OF TRANSPORTATION ELIOT SPITZER, Governor ASTRID C. GLYNN, Commissioner It is the policy of the NYSDOT to use metric units for all projects to be let for construction after September 30, 1996. This project is being designed using metric units and the text of this report uses metric units. The following table of approximate conversion factors provides the relationship between metric and inch-pound units for some of the more frequently used units in highway design. The table allows one to calculate the Inch-Pound Unit by multiplying the corresponding Metric Unit by the given factor. Metric Unit x Factor = Inch-Pound Unit Length kilometer (km) x 0.621 = mile (mi) meter (m) x 3.281 = foot (ft), (’) millimeter (mm) x 0.0394 = inch (in), (”) Area hectare (ha) x 2.471 = acre (a) square meter (m 2) x 1.196 = square yard (sy) square meter (m 2) x 10.764 = square foot (sf) square kilometer (km2) x 0.386 = square mile (sq mi) Volume cubic meter (m 3) x 1.308 = cubic yard (cy) cubic meter (m 3) x 35.315 = cubic foot (cf) Speed kilometers per hour (km/h) x 0.621 = miles per hour (mph) meters per second (m/s) x 3.281 = feet per second (fps) Flow cubic meters per sec (m3/s) x 35.31 = cubic feet per sec (cfs) DRAFT DESIGN REPORT/ ENVIRONMENTAL ASSESSMENT VOLUME I PIN 0112.52 Route 110 Drainage and Roadway Improvements Prime Avenue to Young’s Hill Road Town of Huntington Suffolk County October 2007 October 2007 Draft Design Report/Environmental Assessment PIN 0112.52 Table of Contents VOLUME I : I. INTRODUCTION................................................................................................................ I-1 II. PROJECT IDENTIFICATION, EVOLUTION, CONDITIONS AND NEEDS, AND OBJECTIVES ................................................................................................................... II-1 A. Project Identification .................................................................................................... II-1 1. Project Type .......................................................................................................... II-1 2. Project Description/Location .................................................................................. II-1 a. Description....................................................................................................... II-1 b. Regional Map................................................................................................... II-1 c. Project Map...................................................................................................... II-1 B. Project Evolution ......................................................................................................... II-1 C. Conditions and Needs ................................................................................................. II-4 1. Transportation Conditions, Deficiencies and Engineering Considerations.............. II-4 a. Functional Classification and National Highway System .................................. II-4 b. Ownership and Maintenance Jurisdiction......................................................... II-4 c. Culture, Terrain, and Climatic Conditions......................................................... II-4 d. Control of Access............................................................................................. II-4 e. Existing Highway Section................................................................................. II-5 f. Abutting Highway Segments and Future Plans for Abutting Highway Segments ........................................................................................................ II-5 g. Speeds and Delay............................................................................................ II-6 h. Traffic Volumes................................................................................................ II-6 i. Level of Service ............................................................................................... II-7 j. Non-Standard Features and Other Non-Conforming Features ........................II-10 k. Safety Considerations, Accident History and Analysis ....................................II-11 l. Pavement and Shoulder Conditions................................................................II-11 m. Guide Railing, Median Barriers and Impact Attenuators..................................II-12 n. Traffic Control Devices....................................................................................II-12 o. Structures .......................................................................................................II-13 p. Hydraulics of Bridges and Culverts .................................................................II-13 q. Drainage Systems...........................................................................................II-13 r. Soils and Foundations ....................................................................................II-15 s. Utilities ............................................................................................................II-15 t. Railroads ........................................................................................................II-15 u. Visual Resources............................................................................................II-15 v. Provisions for Pedestrians and Bicyclists ........................................................II-16 w. Planned Development for Area .......................................................................II-16 x. System Elements and Conditions ...................................................................II-16 y. Environmental Integration ...............................................................................II-16 2. Needs...................................................................................................................II-17 a. Project Level Needs........................................................................................II-17 b. Area or Corridor Level Needs .........................................................................II-18 c. Transportation Plans.......................................................................................II-18 D. Project Objectives ......................................................................................................II-18 i October 2007 Draft Design Report/Environmental Assessment PIN 0112.52 III. ALTERNATIVES.............................................................................................................. III-1 A. Design Criteria............................................................................................................ III-1 1. Design Standards ................................................................................................. III-1 2. Critical Design Elements....................................................................................... III-1 3. Other Controlling Parameters ............................................................................... III-1 B. Alternatives Considered ............................................................................................. III-5 1. Drainage Alternatives Considered ........................................................................ III-5 2. Highway Alternatives Considered ......................................................................... III-6 C. Feasible Alternatives .................................................................................................. III-7 1. Description of Feasible Alternative........................................................................ III-7 a. Drainage Alternatives...................................................................................... III-8 b. Highway Alternatives .....................................................................................III-24 2. Engineering Considerations for Feasible Alternatives ..........................................III-26 a. Special Geometric Features...........................................................................III-26 b. Traffic Forecasts, Level of Service, and Safety Considerations......................III-27 c. Pavement ......................................................................................................III-34 d. Structures ......................................................................................................III-35 e. Hydraulics......................................................................................................III-35 f. Drainage ........................................................................................................III-35 g. Maintenance Responsibility ...........................................................................III-35 h. Maintenance and Protection of Traffic............................................................III-35 i. Soils and Foundations ...................................................................................III-37 j. Utilities ...........................................................................................................III-37 k. Railroads .......................................................................................................III-39 l. Right of Way ..................................................................................................III-39