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Home My WebLink About1999-10-26 - AGENDA REPORTS - GVR SOLEDADCYN FEASIBILITY (2)CITY OF SANTA CLARITA AGENDA REPORT UNFINISHED BUSINESS DATE: October 26, 1999 City Manager Approval: Item to be presented by: SUBJECT: GOLDEN VALLEY ROAD AND SOLEDAD CANYON ROAD INTERSECTION/INTERCHANGE FEASIBILITY STUDY DEPARTMENT: Transportation & Engineering Services RECOMMENDED ACTION City Council accept the Feasibility Study Report and the City staff presentation on the Golden Valley Road and Soledad Canyon Road intersection/interchange. Authorize staff to move forward toward the preliminary design and environmental assessment phase of the project based on the report recommendations. Authorize the City Manager to extend the current contract with ASL Consulting Engineers (ASL) to initiate the next phase of the project. BACKGROUND During the May 11, 1999 City Council meeting, Councilmembers approved a contract with ASL to perform a preliminary design analysis and prepare a Feasibility Study Report for a new intersection/interchange between the proposed Golden Valley Road and existing Soledad Canyon Road. The results of that study were presented to the City Council during a study session on October 5, 1999. The design analysis involved the development of eight preliminary conceptual alternatives for the proposed connection that would provide a safe, functional, feasible, and cost-effective solution with minimal environmental, utility, and right-of-way impacts. The study provides information on the environmental, design, construction, business impacts, and consequences of each alternative. One of the reasons that the Council requested the study was to begin to understand what impacts would result on the adjacent properties. The following associated projects, both public and private, will be most affected by the eventual construction of any intersection linking the two six -lane major highways: 1) Resolution No. 99-13 — Resolution to vacate a portion of Soledad Street, west of Oak Avenue: Decision pending outcome of this study (Item 21, January 12, 1999 City Council meeting). 'a E GOLDEN VALLEY AND SOLEDAD CANYON ROAD INTERSECTIONANTERCHANGE FEASIBILITY STUDY October 26, 1999 - Page 2 2) Golden Valley Road Project: Design of the northern portion of Golden Valley Road at Soledad Canyon Road cannot be finalized until preliminary design of subject intersection is complete. 3) Private Developments: Proposed developments adjacent to the subject intersection may be impacted by the design. City staff cannot provide clear direction to applicants interested in developing adjacent properties until the City has completed the geometric design of said intersection. Based on input from the public meetings and discussions with adjacent property owners and developers, the draft Feasibility Study Report was developed. The report was then finalized upon review by City staff, Los Angeles County Department of Public Works, Los Angeles Department of Water and Power (DWP), Southern California Regional Rail Authority (SCRRA)/Metrolink, and the Public Utilities Commission (PUC). Based on criteria and methodology set for the study, the report recommends one alternative as the preferred design for the proposed connection. That recommended alternative is not the last word on the interchange. Further analysis (by staff, consultants, and the City Council) during the environmental review and preliminary design phases will eventually set the configuration and alignments. ALTERNATIVE ACTIONS City Council may choose to postpone or cancel further work on this issue. Postponement will have significant impacts on the aforementioned projects associated with this study. The results of this study will provide the City Council with adequate background information to make further decisions. FISCAL IMPACT The subject project is within the joint City/County Bouquet Bridge and Major Thoroughfare (B&T) Construction Fee District under the City's jurisdiction. No City funds were allocated for this study. Los Angeles County committed funds in the amount of $117,800.00, and the City anticipates that the County will fund this next phase of the project. ATTACHMENTS Exhibit "A"— Area Map Exhibit "B" — Partial Plan Feasibility Study Report (available in City Clerk's Reading File) KM:tw wnnci1\g1dnv1br\ findings.dw r= V1Ja 1� lo` 15 Iden Vallay W •T a•� kI[AfJ / r / / 41 Z N r Z as AA 1( a 7 •O ! 0 m m mm0 > >� >�CE m o3 T m T gg WQ J o v Li 02u) aim i I • Oi 1 p I rij — afl i I i w, I p - c IS, X W ` d @4a'S 4y 0 m m mm0 > >� >�CE m o3 T m T gg WQ J o v Li 02u) aim i I • Oi 1 ra ASL PRESENTATION —10/26/99 GOLDEN VALLEY ROAD/SOLEDAD CANYON ROAD FEASIBILITY STUDY CITY OF SANTA CLARITA (2023.0009.00) ALL ALTERNATIVES ASSUME GOLDEN VALLEY ROAD ASA MAJOR ARTERIAL HIGHWAY WITH 3 LANES IN EACH DIRECTION, RAISED 14 FOOT MEDIAN, 10 FOOT SIDEWALK ON BOTH SIDES AND A 12 FOOT BIKE TRAIL ON ONE SIDE. TOTAL R/W WIDTH= 116 FEET. INTRODUCTION: Description of Area and Location of the following: • Existing Golden Valley R/W (80' + 20' Slope) • DWP Easement • Aqueduct Alignment • Valley Business Center/ Santa Clarita Business Park • Ruether Avenue • Oak Avenue • Golden Oak Road • Golden Triangle • Soledad Street IMPACTS TO ALL ALTERNATIVES: (Traffic Needs, Environmental, R/W and Costs) • Provide for future extension over the Santa Clara River • Minimal Environmental Impacts • Significant R/W Impacts • Valley Business Center Impacts (ROW 100' - Proposed Cross Section 1161) • Requires Relocation of Water Pump Station • All Allow for Connection of Soledad Canyon Road and Soledad Street ALTERNATIVE I — Golden Valley Road crosses over Soledad. Canyon Road with a loop connector across DWP to Soledad Canyon Road. (Bridge Length = Approx. 85 meters = 280 feet long) Alternative 1— Advantages • Provides for Grade Separation of Bike Trail • Provides High Level of Service for Traffic • Meets METROLINK and PUC Safety and Operational Requirements • Provides Uninterrupted Railroad Service and Minimum Impacts to Railroad Facilities • Does not Require Traffic Management Plan (TMP) for Construction A PART OF THE RECORD AT 0/a 6 /2 9 MEETING C:\window \TEMP-MEOOOOOMOC t ITEM N0. I Alternative 1— Disadvantages • Possible Relocation of Power Transmission Tower • Crosses LADWP Aqueduct (Would Require Encasement) • Creates Additional Signalized Intersection on Soledad Canyon Road ALTERNATIVE 2 Golden Valley Road crosses over Soledad Canyon Road with a loop connector across DWP to Soledad Canyon Road and with on and off ramps along the south side of Soledad Canyon Road to Golden Valley Road. (Bridge Length = Approx. 85 meters = 280 feet long plus Approx. 140 meters = 460 feet of ramp bridges and retaining walls). Alternative 2 - Advantages • Provides for Grade Separation of Bike Trail • Provides High Level of Service for Traffic • Free Right -turns Eliminate Additional Intersection on Soledad Canyon Road • Meets METROLINK and PUC Safety and Operational Requirements • Provides Uninterrupted Railroad Service and Minimum Impacts to Railroad Facilities Alternative 2 — Disadvantages • Possible Relocation of Power Transmission Tower • Crosses LADWP Aqueduct • High Structure Construction Costs • Requires TMP During Construction (Impacts to Soledad Canyon Road Traffic) • Significant Right-of-way Impacts to North side of Soledad Canyon Road ALTERNATIVE 3 — Provides for an at -grade intersection of Golden Valley Road and Soledad Canyon Road with the relocation of Golden Triangle Road to provide more vehicle storage length at the railroad crossing. Alternative 3 - Advantages • Does Not Require Relocation of Power Transmission Tower • No Structure Construction Costs Q\windows\TEMP\-MEOOOOO.DDC Alternative 3 — Disadvantages • Does Not Provide for Grade Separation of Bike Trail • Creates Additional Intersection on Soledad Canyon Road • Does Not Meet METROLINK and PUC Safety and Operational Requirements • Does Not Provide Uninterrupted Railroad Service (30 rail trips per day) • Major Impacts to Railroad Facilities • Requires TMP During Construction (Vertical Impacts to Soledad Canyon Road Profile to Match Railroad Elevation) • Impact Driveway Accessibility along Soledad Canyon and Golden Triangle Roads • Additional Right-of-way Impacts due to Right/Left Turn Pockets at Intersection and Relocation of Golden Triangle Road. ALTERNATIVE 4 - Golden Valley Road crosses over Soledad Canyon Road with a connector through the northwest quadrant of the commercial area to Soledad Canyon Road. (Bridge Length = Approx. 85 meters = 280 feet long) Alternative 4 — Advantages • Does Not Require Relocation of Power Transmission Tower • Provides for Grade Separation of Bike Trail • Provides High Level of Service for Traffic • Does Not Cross LADWP Aqueduct and Minimum Impacts to LADWP Corridor • Meets METROLINK and PUC Safety and Operational Requirements • Provides Uninterrupted Railroad Service and Minimum Impacts to Railroad Facilities • Does not require additional signalized intersection on Soledad Canyon — Signal @ Commercial Road will be installed for the Valley Business Center regardless. Alternative 4 — Disadvantages Significant Right-of-way Impacts to the Valley Business Center ALTERNATIVE 5 - Golden Valley Road crosses under Soledad Canyon Road with a connector through the commercial area to Soledad Canyon Road. (Three separate bridges all Approx. 60 meters = 200 feet long: 1) Soledad Canyon Road bridge; 2) Railroad bridge; and 3). Golden Triangle Road bridge) Alternative 5 — Advantages • Does Not Require Relocation of Power Transmission Tower • Provides for Grade Separation of Bike Trail CAwindows\TEMA—MEO0000.DOC r • Provides High Level of Service for Traffic • Does Not Cross LADWP Aqueduct and Minimum Impacts to LADWP Corridor • Meets METROLINK and PUC Safety and Operational Requirements • Provides Uninterrupted Railroad Service Alternative 5 — Disadvantages • Requires Storm Drain Pump Station (Continuous Maintenance/Operation Issues) • High Structure Construction Costs • Major Impacts to Railroad Facilities • Significant Right-of-way Impacts to the Valley Business Center THREE OTHER CONCEPTS WERE REVIEWED AND DROPPED FROM FURTHER CONSIDERATION. Concept B-1: Railroad overcrossing Golden Valley Road.. Dropped because of major impacts to railroad facilities and operations. Concept B-2: Raise the entire Golden Valley Road/Soledad Canyon Road intersection. Dropped because of major impacts to the existing operation of Soledad Canyon Road during construction. Concept B-3: Single point or "urban Interchange". This is the ultimate solution. Dropped because of large structure and its costs and because of the major impacts to the properties and businesses along Soledad Canyon Road. ($57 Million) Table TV - Alternative Cost Summary v 5 Construction $1.9.4 M $24.1 M $ 4.8 M $17.0 M . $175 M Subtotal* Right -of- $ 7.4 M $10.4 M $ 8.8 M $ 8.1 M $ 8.1 M way Subtotal Alternative $26.8 M $34.5 M $13.6 M $25.1 M $25.6 M Total Cost *ConstnlctinnSn6tntak;nnl„A- ,.,a, Dr zgn and l Onstrncnon Administration. 1) INCLUDES 25% CONTINGENCY ON CONSTRUCTION COSTS 2) R/W COSTS ARE ORDER OF MAGNITUDE ESTIMATES C:\windows\TEMP\-ME00000.D0C 9 Y p r .:. i�d �r � ?�lu ➢ { do- � N ' J 4 FAN iS.,, .2¢ n- W'iYV.,JrVrW V s f <! 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