Caltrans District 12 On-Call Contracts

Maintaining the quality of highways throughout Orange County is a major effort. Advanced Civil Technologies is supporting delivery of various Caltrans task orders to keep the region’s transportation infrastructure in top condition.

Caltrans District 12 holds responsibility for the transportation infrastructure of Orange County. Situated between Los Angeles County, the Inland Empire, and San Diego County, District 12’s highway network is heavily used by travelers accessing all parts of Southern California. Advanced Civil Technologies has supported Caltrans in delivering task orders to maintain and upgrade the many routes in the county, including highways, toll roads, and local arterials.

SR-73 Collision Severity Reduction

This task order proposed to remove outdated or damaged safety devices and replace them to meet current standards, enhance safety, and limit maintenance personnel exposure to traffic on SR-73. The project will replace existing guardrails with Midwest Guardrail System, regrade the existing median to a 10:1 slope or flatter, and remove or replace several other safety features. Advanced Civil Technologies was responsible for providing roadway design, signing plans, TMP, the Storm Water Data Report (SWDR), and other services during the PS&E phase.

SR-91 Safety Improvements

To improve safety on eastbound SR-91, Caltrans proposed to upgrade various traffic safety devices between Knott Avenue and the SR-91/I-5 interchange. The project will replace or update signage to meet current MUTCD standards, reducing the number and severity of collisions. The project will also remove 350 feet of Metal Beam Guardrail, which will be replaced with Midwest Guardrail System. Advanced Civil Technologies supported the preparation of the Project Report by preparing conceptual level signing and striping plans, SWDR, and TMP. Our team also provided data collection and as-built gathering.

SR-91 Roadway and Traffic Management System Improvements

Advanced Civil Technologies supported the delivery of the PA/ED and PS&E for improvements to SR-91 as part of the Caltrans District 12 Asset Management Program. During the PA/ED phase, our team led the preparation of the Project Report for Segment 4, which extends from the SR-91/SR-55 Separation to east of the Lakeview Avenue overcrossing in the City of Anaheim. Improvements include replacement of concrete slabs on the freeway mainline in both directions, asphalt concrete rehabilitation of the right shoulder, replacement of overhead sign panels on overhead sign structures, and replacing existing Metal Beam Guardrail with Midwest Guardrail System. The project also proposed to implement various TMS improvements such as upgrading CCTV cameras to HD CCTV, fiber optic communication systems, installation of video detection cameras, smart lighting, and non-PTZ cameras.

In addition to the Project Report, our team prepared the SWDR and TMP for this project segment as well as for the Acacia Street undercrossing to La Palma Avenue overcrossing segment and the La Palma Avenue overcrossing to SR-91/SR-55 Separation segment, all on an expedited schedule. Currently our team is supporting the PS&E phase of this project by preparing the TMP, sign plans, SWDR, and drainage plans for multiple segments.

SR-1 Pavement Preservation

Advanced Civil Technologies is supporting preparation of the PA/ED and PS&E for pavement rehabilitation to SR-1 in the City of Newport Beach. The project will cold plane the existing pavement and replace it with rubberized hot mix asphalt concrete in addition to providing pavement repair at six locations. The project will also upgrade curb ramps to be ADA compliant, upgrade the existing QuadGuard crash cushion to a severe-duty crash cushion, and replace traffic loop detectors. Additionally, during the PS&E phase the scope was expanded to include one Traffic Monitoring Station, several drainage improvements, and Complete Streets elements such as bicycle lanes, high visibility crosswalks, and bike-proof drainage grates. Our team is responsible for providing the signing and striping plans, TMP, SWDR, and drainage memorandum/cost estimate.

SR-90 Capital Preventive Maintenance

This task order proposed to preserve the pavement on SR-90 from Harbor Boulevard to Randolph Avenue in the Cities of Fullerton and Brea. The project will extend the service life of pavement with minimum distress by at least five years and restore poor quality pavement to a minimum design expectancy of ten years. The improvements include cold planing and implementing an overlay on existing pavement, replacing existing signs, and replacing existing traffic signal loop detectors. Advanced Civil Technologies supported the preparation of the PS&E by preparing the striping plans, TMP, and SWDR. The project required close coordination with both cities to ensure the TMP was prepared according to each city’s expectations.

SR-133 Safety, Drainage, and Roadway Improvement Project

Caltrans has proposed several drainage and roadway improvements to SR-133 between the SR-133/El Toro Road intersection and the SR-73/SR-133 interchange. The project will construct a concrete check dam near the SR-133/SR-73 interchange, construct additional drainage infrastructure, extend two reinforced concrete boxes, and relocate an earthen trapezoidal channel. Advanced Civil Technologies was responsible for providing the hydrology/hydraulics report.

I-5 Stormwater Mitigation PS&E

Due to slope erosion along I-5 in two locations in South Orange County, improvements are being delivered to stabilize the slopes and prevent sediment from entering Trabuco Creek and San Diego Creek. One slope, located in San Juan Capistrano, shows surficial instability and deterioration along a 400-foot long portion of the slope, which will be addressed with surficial compaction. The second slope, located in Irvine, will be reconstructed with a buttress fill to mitigate erosion issues. Advanced Civil Technologies was responsible for providing the TMP and the SWDR during the PS&E phase of the project.

Featured Expertise

• Highway Design

• Signing and Striping

• TMP

• SWDR

• Hydraulic/Hydrology Reports

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