25G - ENGINEERING SRVS GRADE SEPARATION

Home Browse Search

AECIIV preferred alternative. A schedule will be developed, maintained and updated for tracking the project. The aerial mapping will be prepared in conformance with Caltrans CAD mapping standards and Deliverables: photogrammetricspeclfications. Horizontal and • Required Copies ofMeetingMinutes vertical aerial control panels will be set to meet aerial • Updated Pro~ectSchedule triangulation requirements. The mapping will be • Public Meeting Exhibits prepared to 1" = 40' scale with 1-foot contours and will be delivered in a Microstation v8 format. Existing reports, studies, proposed and "as-built" plans, Survey crews will field verify the aerial mapping to mapping or other information will be obtained from the delineate planimetrics obstructed by tree coverage or City, utility companies and other agencies as applicable shadows and to verify the contours and spot elevations and reviewed by the design team. Data to be obtained generated from the aerial mapping. and reviewed includes: A color digital orthophoto with 3"pixel resolution will be • Mapping and design information from the City prepared from the 40-scale imagery. The digital for improvement projects; orthophoto will coverthe same mapping limits • Hazardous material/waste information; described above. • Preliminary materials (geotechnical) information; Deliverables: Traffic data (existing and forecasted traffic, ~ Aerial Mapping& Field Surveyin electronic and level of service, capacity adequacy, operational hard copy analysis, accidents, etc.); and DigitalOrtho Photo • Right-of-way and utility plans. We will prepare a traffic operations analysis for the Santa Ana Boulevard grade separation project. The Horizontal and vertical corridor control will be traffic operations analysis will examine existing and established along the corridor to support the aerial forecast future year conditions in the vicinity of the photogrammetry, land net surveys, engineering surveys OCTA/SCRRA at-grade crossing with Santa Ana and future design and construction activities along the Boulevard. The future year conditions examined will be corridor. The survey control will be set in accordance the project opening year and the project design year (20 with Caltrans survey standards and will be tied into the years after opening, assumed to be 2035). Conditions North American Datum of 1983 (NAD83 NSRS 2007) and examined will include the No Project Alternative and up the North American Vertical Datum of 1988 (NAVD88 to three build alternatives. Riverside County) or as specified by the client. The analysis will include examination of the following intersections: This task entails cadastral research within Caltrans District 12 and the County of Orange for existing ~ Santa Ana Bld./I-5 On and Off-ramp. centerline and right-of-way files and/or available Santa Ana Bld./Fuller St.. cadastral records in support of the centerline and right- Santa Ana Bld./Lincoln Ave. of-way of I-5, Santa Ana Boulevard, and Lincoln Street. Santa Ana Bld./Santiago Street. Field surveys will be performed to locate the centerline. We will coordinate with City staff and the PDTto develop In addition, key monuments will be located in order to an appropriate methodology for forecasting year 2035 calculate the centerline of the corridor and adjacent volumes at the study locations, relying on the SCAG RTP intersecting routes. The right-of-way will be based upon or OCTA OCTAM traffic model (or as the City requires) record calculations only and will not be surveyed. data to forecast year 2035 volumes. Aland net base map will be prepared at a scale Specific tasks to be performed for the traffic operations comparable to the aerial mapping and will include said analysis include the following: record centerlines and rights-of-way as well as underlying cadastral information, ownership 1. Peak period traffic counts will be collected at up to information as recorded with the Riverside County three study intersections, for two (a.m. and p.m.) assessor's office. All these data will be incorporated three-hour peak periods. The peak periods to be with the aerial mapping and delivered in a Microstation evaluated will be determined in conjunction with v8 format. the PDT. 2. Futureyeartrafficvolumesforthelocations identified for examination will be developed using r~i f~, fr. ~~,.~~.o~, Ii:~ir~l~~s~l fir p:~r~Ue~~ t~~y Re~~~r~: ~;q~uiiv~~e~~: ire ~ I::' i it p:~l~ins fair w,~~~ ir~~ Il~~l~v~ir~ r~~ e ~~~r~t'i~n I~° r~"eat ~ ~ '