Portola Parkway, Portola Springs & Modjeska Infrastructure Improvements

Location: Irvine, California
Client: City of Irvine/Irvine Community Development Company


Project Highlights

  • Civil Engineering Design & Survey Services
  • Design and Relocations of Underground Utilities – water, reclaimed, sewer, cable, electric & gas
  • Storm Drain Improvements
  • Street Rehabilitation
  • Street widening and median improvements – right-of-way engineering
  • PS&E
  • ADA Ramp Improvements
  • CALTRANS Encroachment Permit
  • Traffic Signal Design
  • Traffic Detour & Traffic Control
  • Office Survey Mapping
  • Bid Assistance
  • Construction Staking
  • Construction Document Preparation for Extensive Infrastructure Improvements
  • Construction Management


PENCO provided civil engineering design, including plans, specifications, and estimates (PS&E), and survey services for the design and construction of the public street backbone infrastructure for the 2.1-miles of Portola Parkway, 1.2-miles of Portola Springs, and 0.5-miles of Irvine Blvd. in the City of Irvine. The improvements for Portola Parkway included the design of a variable-thickness pavement overlay, new curb and gutter, raised median, an extensive storm drain system, the undergrounding of electrical poles, CATV, telephone, and gas utilities, and design of one mile of two new collector roads, Portola Springs and Modjeska, which included right-of-way takes along Irvine Company property, and construction traffic planning.
PENCO prepared new street infrastructure for 1.2-miles of Portola Springs Road and 0.7-miles of Modjeska Parkway that included new a 4-lane roadway and curb, gutter, and storm drain design. Our services included survey mapping including right-of-way base maps, and right-of-way dedications for Portola Springs Road and numerous easements for various utilities. PENCO also provided the design of capital water and sewer facilities, with sizes ranging from 12-inches to 36-inches, and non-capital facilities including 8-inch domestic water, 5,400-linear feet of 8-inch and 1,500-linear feet of 10-inch poly vinyl chloride (PVC) sewer lines to meet master plans prepared by the Irvine Ranch Water District (IRWD). We also prepared a hydrology and hydraulics report and design of three miles of storm drain, up to 96-inches, and 8-foot x 12-foot storm drain boxes. In addition, PENCO prepared Storm Water Pollution Prevention Plan (SWPPP) and Water Quality Management Plan (WQMP) for all project design components. The project included the design of nine new traffic signals including a pre-emptive signal for Fire Station #27 and the design of a 285 foot long, 48” diameter wildlife crossing corridor under Portola Springs Road on the south side of the fire station.

We’re pleased to announce that we merged with Cannon on August 1, 2018.

As we fully transition into the Cannon family, our website will redirect visitors to our parent company, Cannon Corporation’s, website, www.cannoncorp.us. If you’d like to find out more about the merger, read about it in this press release.