Reso 2010-046 - Laserfiche WebLink

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TJKM Transportadon Conaui'm~ Interchange Improvement Project and Future Development In order to determine the amount of traffic that is associated with expected new development and resulting added traffic at the improved interchange, it was necessary to identify specific potential development projects to be included for this study. Only two specific projects, ICI retail and Kaiser Hospital, have been proposed, although additional growth is anticipated in this area. Capital Improvement Project The I-880 SB HOV Lane project includes raising the I-880/Marina Boulevard interchange. This interchange is currently deficient. It does not meet minimum vertical clearance over I-880 and has been hit and severely damaged by trucks on two separate occasions in the past several years. This interchange will be raised to meet minimum clearance standards over I-880, but the improvement of capacity deficiencies on Marina Boulevard is not supported by that project. These capacity deficiencies already exist. The interchange improvement project definition used for the fee calculation covers the segments of Marina Blvd. between Merced St. and Alvarado St. plus the on and off ramps of the interchange. The improvement of the I-880/Marina Boulevard Interchange within the I-880 Southbound HOV Lane Project is limited to raising the interchange over crossing to meet minimum clearance standards with no widening of Marina Boulevard nor realignment of the on and off ramps, nor any funds for converting the current L-8 interchange to an L-9 interchange (partial cloverleaf). The full improvement envisioned by the City is the construction of an L-9 interchange, including raising and widening Marina Boulevard plus nearby improvements to adjacent intersections such as Marina and Merced, Marina and Teagarden, and perhaps Teagarden and Fairway/Aladdin. It is assumed that Intelligent Transportation System (ITS) technology will provide real-time traveler information regarding travel times from the off-ramp to the ICI and Kaiser Projects so that excess demand for westbound left turns from Marina to southbound Merced can be moderated to enable maintenance of adequate levels of service. TJKM used a total project cost of $27,000,000 as the capital improvement cost for the entire range of improvements. Development Projects Two major development projects are proposed near the interchange, and developers are in the process of submitting applications to the city for entitlements. They have been found to contribute significant amounts of new traffic to the interchange. These development projects are: I. ICI Retail; and 2. Kaiser Permanente Full Service Hospital (relocation from. Hayward). These two projects are located in the southwest quadrant of the interchange and are noted in Figure I. In addition to these two major development projects, the city has forecast substantial growth primarily west of I-880. Table I shows citywide growth estimates for 2005 through 2030. These data are in the model used for estimating trips using the interchange. As can be seen, city population is estimated to increase 21 percent from 81,918 in 2005 to 98,859 by 2030, and employment will increase from 43,495 in 2005 to 62,846 in 2030, an increase of 44 percent. Page 6 Final Report - Tragic Impact Fee Analysis for 1-880/Marina Interchange Improvement November 12, 2009