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Home My WebLink AboutO.B. 1 MEDIAN OPENING 02-03-92AGENDA -- JANUARY 28, 1992 WILLIAM A. HUSTON, CITY MANAGER OLD BUSINESS NO. 1 2-3-92 PUBLIC WORKS DEPARTMENT/ENGINEERING DIVISION _rRANCH FEASIBILITY STUDY TO PROVIDE A MEDIAN OPENING ON TUSTIN ROAD AT PALERMO RECOMMENDATION The pleasure f the City Council. BACKGROUND At their meeting of November 18, 1991, the City Council directed staff to submit a report for the council meeting of December 2, 1991 which investigates the possible construction of a left turn pocket within the existing raised median on Tustin Ranch Road at Palermo for access into the Almeria Development. At the December 2, 1991 City Council Meeting, the item was continued to the meeting of January 6, 1992. At the January 6, 1992 City Council meeting, the item was continued to the meeting of February 3, 1992. A report investigating such a median opening had previously been prepared by City staff at the request of the City Council. That report had been presented to the City Council at their meeting of December 17, 1990 and was received and filed by a unanimous vote of 4 to 0. A copy of that repo t has been attached for reference. DISCUSSION The report previously prepared for this matter would still be relevant including the typical construction costs that could be expected with such an endeavor. Currently, no City funds have been appropriated in the 1991-92 budget for this work. If the City Council were to approve of such a project, then detailed plans and specifications would have to be prepared, and the project put out to a formal public bidding process for actual construction. It should be noted that Assessment District (A.D.) funds are being utilized on the Tustin Ranch Road median at Auto Center Drive to accommodate he extension of Tustin Ranch Road to the south. This use is considers part of the initial construction for the overall East Tustin A.D. Tanned infrastructure improvements. Robert S. Le endecker Director ofublic Works/ City Engines RSL:ktb:LFTTURN Attachment Dana R. Kasdaln Engineering Services Manager i 71 _L ��--•� :ro3 � ,`'rte ;,ter !' •TE: DE TO: WI FROM: PUBLIC SUBJECT: FEAS I BI RANCH R RECOMMENDATI The pleasure Inter - Com 11, 1990 A. HUSTON, CITY MANAGER DEPARTMENT/ENGINEERING DIVISION STUDY TO PROVIDE A MEDIAN OPENING ON TUSTIN AT PALERMO N' of the City Council. BACKGROUND The City Council, at their November 19, 1990, requested staff to investigate he feasibility of butting the raised median on Tustin Manch Road at Palermo to provide an opening for left turn access into the Peters Tract (South of Irvine Boulevard. A traffic impact study was conducted to determine the traffic and circulation impacts associated with the Peters Tract. This tract consists of 118 single family detached homes and is located on Tustin Ranch Road between Irvine Boulevard and Parkcenter Lane. Two access locations are provided for the tract, one at Palermo from Tustin Ranch Road and the other one off Parkcenter Lane via Monterey St eet/Triburon Way. . Irvine Boul vard is a six -lane Major Arterial roadway located to the north o the Peters Tract. This arterial currently services traffic vol mes on the order of 34,000 per day. Tustin Ranch Road also has six lanes of traffic and is classified as a Major Arterial roadway. Presently, this roadway services daily traffic volumes of 3,000 vehic es per day. Parkcenter Lane is a local collector with current dai y traffic volumes of 1,200 vehicles per day. FINDINGS The traffic generation potential of the Peters Tract is expressed in vehicle trip ends, where a trip end is a one-way vehicular movement either entering or departing the tract. The traffic generation rates shown herein are based on data published by the Institute o Transportation Engineers and assumes full occupancy of the tract. For the purpose of assessing the overall impact of the tract, trip generation rates and distribution assignments have been used for a "worst case" analysis. Table 1 presents the traffic generation relative to the existing Peters Tract. TABLE 1 TRIP GENERATION PROJECT TRAFFIC 2 WAY Units RATE/ RIPS Page 2 AM PEAK HOUR PM PEAK HOUR INBOUND OUTBOUND INBOUND OUTBOUND RATE/TRIPS RATE/TRIPS RATE/TRIPS RATES/TRIPS Single 10.06J/1,188 .204/24 .55/65 .633/75 .372/44 Family Detached Homes 118 Units * DATA SOURCE is ITE- Trip Generation, 4th Edition, 1987. As shown in the table this project area generates a total of 11188 vehicles trips per day, evenly divided between inbound and outbound movements. Du ing the AM peak hour, a total of 89 trips would be generated (24 inbound- 65 outbound) while the PM peak hour would generate an estimated total of 119 trips (75 inbound- 44 outbound) . The distribution and assignment of project traffic was based on a review of current peak hour travel patterns. Exhibit 1 shows the traffic distri ution for the Critical AM, and PM peak hours as well as 24 hour daily volumes. The total trip generation was analyzed for each acces3 entry point as a worst case scenario. Exhibit 1 also shows that during the critical PM peak hour, 41 left turns would be generated if a left turn pocket was to be constructed on Tustin Ranch Road. The construction of this left turn pocket is physically possible with the construction cost estimated at $45,100 as shown in E ibit 2. A detail sketch of the left turn pocket design is shown in Exhibit 3. This design would restrict left turns out of Palermo. However, it should be pointed out that this left turn would be uncontrolled which in turn would require a yield to on -coming traffic. The current volume of traffic on Tustin Ranch Road is approximately 3,000 vehicles per day. Future traffic projections shown that this street will increase to 26,000 vehicles in the year 1995 and to 32,,000 vehicles by the year 2010. Future traffic volumes for Irvine Boulevard will exceed 40,000 per day by the year 2010. As soon as the Tustin Ranch Road interchange with the Santa Ana Freeway is completed, the right turn demand off of Irvine Boulevard will. increase dramatically. This incr green arr Tustin Ra combinati will crea without e Traffic wi a controll, provides a additional feeling th, should be available determined utilized o - Bob Ledende Director of BL: SD: cr Page 3 ;ed demand will utilized the right turn over lapping currently installed at the intersection of Irvine and i Road. The utilization of this right turn arrow in with future traffic volume demands on Tustin Ranch Road insufficient gaps to allow left turns into Palermo :ssive delays. hing to enter the Peters Tract can currently enter via d traffic signal at Parkcenter Lane. This entry adequately ,cess to the project area without the installation of an left turn pocket on Tustin Ranch Road. It is the Staff's t money required to install the additional left turn pocket used on other priority projects. There is no funding .n the 1990-91 Budget for this project, and it has been that Assessment District No. 85-1 funding could not be this project. ker Public Works/City Engineer J2."O dxa- -I LA�� O-er Sandra D oubleda y Engineering Consultant W_ IRVINE _ BOULEVARD_ i w .• - o Q OO W f + G rco O r 6 0 U z z 1 !r rZ Lu 0 m 3 0 On'ic -- -1, VENTIA sa a > m uj uj 6G C 0 5 W n� O LL Z ♦ Ir. 12 co t o m o X O Q :1 W Z W V f- 1� Z —t CARRERA Z o D co d r 1 a] D LL 1-- _ Q 00013boo aC U PALERMO O� ~ N W V MARSEUNA N 7 �p 6O 1 6p 06 X01 `o`° X05 Ow O� 50% 6 1 9 �— 1p SON@RIA 0� � '9 1 � • / 4rs1stir Fr lb d Qp rn �IN N M/zl 1 1 1 1 1 1 1 3 oc. 1 ,b yc � ar �1 :J =:1 i•..� N V 0 v Z r cc g � � eL ul z w Q � , D to ILL MA �u Ul v >¢-- z ' � N O d ' UJ _ Z� Z Q 'Z3o = 4 1 cc U� ss 1 1 1 1 1 1 1 3 oc. 1 ,b yc � ar �1 :J =:1 i•..� N V N ~ v 1 1 1 1 1 1 1 3 oc. 1 ,b