SR 710 EIR/EIS; Alternative Analysis, Conceptual Engineering Plan Development, Preliminary Engineering & Reports



CH2M Hill, Inc., Yoga Chandran, PE (714) 435-6111 Thomas Ionta, PE (714) 435-6238


Alternatives Development Arterial Highway Corridors Conceptual Engineering Plan Development Arterial Highway Preliminary Engineering Tunnels Conceptual Development Peer Review Tunnels Preliminary Engineering Design Assistance Intersection Concept Design Intersection Preliminary Engineering Local Street Connections TSM/TDM Development Coordination Meetings Technical Memoranda EIR/EIS Support

$1½ billion

The CH2M Hill / DRC Team developed a Draft EIR / EIS for the Los Angeles County Metropolitan Transportation Authority to extend the SR 710 Freeway to the I-210 Freeway. The project included a Regional Transportation Plan, conceptual development, and preliminary engineering of alternatives for freeway, light and heavy rail transit, commuter tunnels, arterial corridor studies, intersection improvements, and local street connections. DRC’s scope included identifying SR 710-impacted arterial highways; developing alternatives to continue into conceptual engineering; conceptual engineering of selected arterials to include alignment studies, plans/profile improvements, intersection configurations, and arterial/freeway connections. The conceptual engineering phase then led to preliminary engineering of the “best” alternatives. DRC supported tunnel design, tunnel QA/QC, and performed peer reviews of tunnel design. Our scope also included Transportation System Management and Transportation Demand Management alternatives and analyses of “Hot Spot” intersections. Deliverables included arterial strip maps, plan and profile drawings, intersection drawings, and Technical Memoranda.