California Department of Transportation

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State Route 74 Shoulder Widening Project

Ortega Hwy picture.JPG

The project proposes to widen the existing shoulder on State Route 74 (SR-74) to a continuous 4-foot shoulder in both directions, install centerline rumble strips, construct turn-outs and install metal beam guard rail (MBGR) at various locations.  Shoulder widening will require roadway excavation and embankment in certain cut and fill sections.  Construction of retaining walls will be required. Most existing culverts within the project limits will be replaced. This project begins from east of Antonio Parkway/La Pata Avenue (PM 2.93) to west of Conrock Entrance (PM 5.06) in an unincorporated area of the County of Orange.


Initial Study with [Proposed Mitigated Negative Declaration] (3 MB)

Public Notice


Technical Studies and Memorandums:

Biological Assessment (JAN 2013) (88 MB)

Historic Property Survey Report (MAR 2013) (6 MB)

Initial Site Assessment Checklist (FEB 2012)

Natural Environmental Study (JAN 2013) (78 MB)

Paleontological Resources ID & Evaluation Report (JAN 2013) (9 MB)

Preliminary Geotechnical Evaluation & Recommendations (SEPT 2012)

Visual Impact Assessment (OCT 2012)

Water Quality Assessment Report (OCT 2011) (14 MB)