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25B - SANTA ANA BLVD GRADE SEPARATION
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01/18/2011
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25B - SANTA ANA BLVD GRADE SEPARATION
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Last modified
1/3/2012 3:54:02 PM
Creation date
1/13/2011 1:01:53 PM
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City Clerk
Doc Type
Agenda Packet
Item #
25B
Date
1/18/2011
Destruction Year
2016
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The analysis will include examination of the following intersections: <br />• Santa Ana Bld./1-5 On and Off-ramp. <br />• Santa Ana Bld./Fuller St.. <br />• Santa Ana Bld./Lincoln Ave. <br />• Santa Ana Bld./Santiago Street. <br />We will coordinate with City staff and the PDT to develop an appropriate methodology for forecasting year 2035 <br />volumes at the study locations, relying on the SLAG RTP (regional) traffic model (or as the City requires) data to <br />forecast year 2035 volumes. <br />Specific tasks to be performed for the traffic operations analysis include the following: <br />1. Peak period traffic counts will be collected at up to three study intersections, for two (a.m. and p.m.) three-hour <br />peak periods. The peak periods to be evaluated will be determined in conjunction with the PDT. <br />2. Future year traffic volumes for the locations identified for examination will be developed using growth rates <br />calculated from the RTP model SED, as described above. <br />3. Future year traffic volumes will be developed for the four build alternatives described above. <br />4. Opening year traffic volumes will be developed using growth rates calculated from the RTP model SED for an <br />intermediate year, to be determined by the PDT. <br />5. The resulting intersection levels of service will be calculated using Highway Capacity Manual (HCM) 2000 <br />analysis methodologies. <br />6. Based on the future levels of service, intersection lane geometries will be identified to maintain minimum level of <br />service standards. <br />7. Weaving operations will be analyzed for traffic movements on the westbound segment of Avenue P between the <br />Avenue P Westbound Connector Road and Third Street for Alternatives 1 and 2 using Highway Capacity Manual <br />(HCM) 2000 analysis methodologies <br />8. The results of the traffic operations analysis will be presented in a technical study. This study will document the <br />level of service analysis methodologies employed, existing traffic conditions, forecast future (opening year and <br />design year) traffic conditions for each alternative, and improvements needed to maintain satisfactory operations in <br />each analysis year. <br />9. Our traffic subconsultant will attend up to eight meetings related to the proposed project. <br />Engineering Studies of Various Feasible Plan Alternatives <br />Roadway <br />Task 1.5 Prepare Alternatives Concepts/Geometric Preferred Alternative Development <br />Preliminary engineering will focus on the physical characteristics of the project area and the engineering features and <br />standards required to develop the project. The alternatives we will develop will need to address cost effective ways to <br />resolve access issues, for both vehicle traffic and rail traffic, to the local businesses. They will also address the potential <br />expansion/changing needs of the SCRRA/OCTA. <br />Deliverables: Preliminary Roadway Plans, Profile (1"=20' Scale), and Typical Sections <br />CitY of sanla Ana <br />25B-24
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