3C Public Hearing 2010 0503 - Laserfiche WebLink

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TJIUN Traiupor~tion Consul Introduction and Summary Introduction The I-880/Marina Boulevard interchange is currently deficient and due to be replaced, in part, by the widening of I-880 for the southbound I-880 HOV Lane project. However, the HOV Lane project will not support all costs of the interchange improvements that are needed. Additionally, major development proposals in San Leandro are being developed for application for entitlements, and several contribute significant amounts of new traffic to the interchange. Currently, the City of San Leandro has an existing traffic impact fee program, the Development Fees for Street Improvements (DFSI) for named improvements throughout the city where it is difficult to attribute increases in traffic to specific development projects. The DFSI program has thirteen generalized land uses that TJKM proposes to use as the basis for fees in this project. The improvement of the I-880/Marina Boulevard interchange is not a named project in the DFSI program, and the need for that project is perceived to be a combination of existing traffic (the interchange is already deficient) along with the increased traffic from major nearby development projects, other development in San Leandro and the increase in regional traffic in the I-880 corridor. Therefore, it is not appropriate to finance the needed improvements at this interchange solely from nearby development fees. In order to determine a fair share of the improvement cost, the City of San Leandro is interested in determining: • The cost per peak hour vehicle trip simply calculated by dividing total a.m. and p.m. peak hour trips on a typical weekday into the total costs for improving the interchange; • The resulting association of costs per peak hour trip by categories of land use; and • The allocation of interchange improvement costs to: a) existing trips using the interchange, b) to the growth in trips due to future development in San Leandro, and c) to regional traffic using the interchange (trips neither beginning nor ending in San Leandro). This report is prepared so that the City of San Leandro can make decisions on financing strategies for the interchange improvements. Summary The Alameda County Congestion Management Agency countywide model scenarios for 2005 and 2030 were used as the basis for calculations in this analysis. Specifically, the general validated countywide model was modified for the Draft Environmental Impact Report for the proposed ICI Retail Center and the relocation of the Hayward campus of the Kaiser Permanente Hospital into a vacant site in the southwest quadrant of the Marina/I-880 Interchange. The estimated total of all trips using the interchange during the a.m. and p.m. peak hours is 14,814 on a typical weekday in 2030. In 2005 this total is 7,924, so the increase over 25 years is 87 percent, or about a 2.5 percent increase per year, on average. Trips using the interchange with an origin and/or destination within the city are 97 percent of all trips in 2005 and 88 percent of all trips in 2030. The reason for the increased through traffic at the interchange is due to anticipated congestion in I-880. More trips between Oakland west of I-880 are likely to use Doolittle Drive to bypass the I-880 Page I Final Report - Tragic Impact Fee Analysis for 1-880/Marina Interchange Improvement November 12, 2009