Memorandum
Date: October 24, 2024
To: Planning Commission
From: Mireya G. Turner, Community Development Director
Michelle Irace, Principal Planner
Prepared By: Laura Hall, Senior Planner
Subject: Consideration of proposed General Plan Conformity (GPC 22-11) and Initial Study/ Mitigated Negative Declaration (IS 22-28, for the Wolf Creek Bridge Replacement Project (Bridge No. 14C-0049), located in unincorporated Spring Valley, approximately 5.4 miles northeast of State Route 20; Quad: Benmore Canyon T14N, R07W, Section 11 UTM Zone 10 (39.082336, -122.604181).
Executive Summary:
The County of Lake, in coordination with the California Department of Transportation (Caltrans), proposes replacing the existing Wolk Creek Bridge (Bridge No. 14C-0049) to improve public safety. The bridge was construction in 1967 and has a sufficiency rating of 60.1 (out of 100) and has been designated as functionally obsolete per the Caltrans Structure Maintenance & Investigations, Local Agency Bridge List (March 20191). The functionally obsolete designation is a result of the insufficient deck width. Wolf Creek Road is a two-lane road, and the clear width of the existing bridge is too narrow to support standard lane and shoulder widths for a two-lane facility. Additionally, the existing bridge fails to meet the current Caltrans design standard for freeboard requirements. Hydraulic studies indicate that the existing bridge may be overtopped during a 100-year storm event.
The bridge is in unincorporated Spring Valley in Lake County, approximately 5.4 miles northeast of State Route 20; Quad: Benmore Canyon T14N, R07W, Section 11 Universal Transvers Mercator Zone 10 (39.082336, -122.604181). Temporary construction easements may be required on parcels adjacent to the bridge. Construction staging to occur within public rights-of ways along Spring Valley Road and with easements at APNs 062-101-01, 062-102-01, and 062-092-03. A temporary water crossing may be required at APN 062-101...
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