State Route 78 Culvert & Road Rehabilitation Project

Logo of the project. For more information, call (619) 688-6670 or email

Drainage and Roadway Improvements

Caltrans is restoring aging 35 drainage systems on SR-78 between I-5 and I-15, at on/off-ramps and some surface streets. Drainage repairs will include Cured-In-Place Pipe (CIPP) liner and inverted pipe paving to eliminate the need for open excavation and to reduce public impacts. Night work will be implemented in areas requiring pipe replacement from 9 pm to 5 am. Roadway work includes electric improvements such as wiring and lighting, new landscaping, and resurfacing pavement at the El Camino Real overcrossing and on SR-78 between the eastbound Plaza Drive onramp and Emerald Drive off/on ramps. Crews will also repair/replace median concrete barriers, guard railing, fencing, signs, and pavement delineation/markings.


  • Improve drainage and roadway quality, function, and service life; to reduce future maintenance and construction efforts.
  • Increase safety, improve traffic control facilities, reduce future impacts to the traveling public, and reduce exposure to highway workers.
  • Upgrade aesthetics with new signs, new lighting, and planting improvements.

What’s ahead?

Construction setup began mid-February 2023, and multiple stages of construction should conclude by mid-2025 with plant establishment. At the conclusion of the work, motorists will see and feel an improvement in ride quality and benefit from the increased service life of the drainage and roadway.

Temporary closures of mainline segments, on/off-ramps, and surface streets in both directions within the project limits. Shoulders will be closed for work behind concrete barriers.


The project cost of $22 million is funded through the State Highway Operation and Protection Program (SHOPP), with 89% coming from the Federal Government and 12% from the Road Maintenance and Rehabilitation Account created under voter-approved Senate Bill 1.


Safety for the traveling public, including safety and protection for highway workers, is priority number one for Caltrans.

The following safety features are included in the construction of this project:

  • Targeted construction work zone speed limit reductions to 55 MPH
  • Advance warning traffic signs
  • Reinforced concrete barrier that separates traffic from roadway workers and equipment

Map showing the project area and culvert locations. For more information, call (619) 688-6670 or email

News Releases


Project Manager

Kareem Scarlett

Communications Manager

Stephen Welborn


4050 Taylor Street 
 San Diego, CA 92110 
 Ph: (619) 688-6670