Harbor Blvd. & Gisler Avenue Intersection Widening Project


OE provided design services to the City of Costa Mesa for this two-phase project. Phase I included only eastbound improvements, converting the eastbound optional through-right lane to optional through-left lane, and the addition of eastbound right-turn lane. Phase II entailed a conceptual feasibility study and right-of-way acquisition requirements for north and southbound improvements, including the addition of a southbound right-turn lane, and an extension of the northbound optional through-right lane. Work also included installing an overhead freeway sign. OE provided detailed field analysis, specifications, and plans including measurements and exhibits, in conformance with MUTCD, Caltrans, and City standards. Additionally, OE coordinated with SAF-r-DIG and utility companies to perform potholing and identify utility obstructions. OE worked specifically with SoCal Gas to relocate a gas line in conflict with footings for the overhead sign to be installed.