20A - AA FIRST ST BRIDGE REPLACEMENT PROJECT

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LSA ASSOCIATES, INC. INITIAL STUDY/MITIGATED NEGATIVE DECLARATION JULY 2010 FIRST STREET BRIDGE REPLACEMENT PROJECT CITY OF SANTA ANA 2.0 PROJECT DESCRIPTION 2.1 INTRODUCTION The project site is located in the City of Santa Ana (City), Orange County (County), California. The proposed project will be funded in part by the federal Highway Bridge Replacement and Rehabilitation (HBRR) Program. The proposed project will be implemented in two phases. Demolition and construction will occur first on the northern bridge structure, followed by demolition and construction of the southern bridge structure. This will allow the roadway to remain operational during construction by providing one through-lane in each direction. The new bridge will meet California Department of Transportation (Caltrans) seismic design criteria and will add one lane in each direction and a sidewalk on the north and south sides of the bridge. Currently, the bridge on First Street has 4 travel lanes, while approximately 300 feet west and east of the existing bridge, First Street is a six-lane arterial. The proposed project would restripe areas 300 feet east and west of the bridge structure to accommodate an additional travel lane in this area. Upon project completion, First Street would be consistent with the Orange County Master Plan of Arterial Highways (MPAH) and the City of Santa Ana's Circulation Element which show a six-lane facility. 2.2 PROJECT LOCATION/SITE CONTEXT The regional location of the project is in the City of Santa Ana in central Orange County, which is bound on the north by the Cities of Orange and Garden Grove, on the east by the Cities of Tustin and Irvine, on the south by the City of Fountain Valley, and on the west by the City of Westminster. Interstate 5 (I-5) and State Route 22 (SR-22) bound the City on the north, and State Route 405 (SR- 405) bounds the City on the south, as shown in Figure 1. The general location of the project is at the First Street/Santa Ana Bridge located on First Street, between Fairview Street and Harbor Boulevard in the City of Santa Ana. The specific project limits are between Susan Street on the west side and the Iglesia de Cristo church on the east side. The project site is a bridge located within City right-of-way over the Santa Ana River. There are three manufactured housing parks in the project vicinity; to the south-west Quiet Village, to the south-east Continental Mobile Manor, to the north -east Hyde Park Mobile Estates, and to the north-west residential housing. Figure 2 shows the project location in relation to surrounding land uses. Figures 3 through 6 show the existing conditions and setting of the project area. Figure 7 shows the design of the existing bridge. P:\DMJ0701\MND\2.0 Project Description.doc (07/25/10) 2-1 20A-12