Temescal Canyon Road Widening Projects

To improve traffic flow along the Temescal Canyon corridor, the County of Riverside proposes to widen three segments of Temescal Canyon Road from one lane in each direction to two lanes in each direction. 


The proposed improvements will remove the existing roadway and construct a full widened street, install storm drain improvements, relocate power poles, tie in driveways, construct curbs, and construct sidewalk on one or both sides of the street.

Specifically, the new street improvements will provide two 12-foot lanes and an 8-foot bike lane (with no on-street parking) in each direction, along with a center 12-foot two-way left turn lane.  In addition, 6-foot wide curb adjacent sidewalk will be constructed on one or both sides of the street.


  • The Dawson Canyon Segment is located from Dawson Canyon Road to 0.7 mile north of Dawson Canyon Road
  • The Dos Lagos Segment is located from Leroy Road northerly 0.6 mile to Dos Lagos Drive
  • The El Cerrito Segment is located from Tom Barnes Street northerly 0.9 mile to El Cerrito Road

Construction Schedules

  •  Dawson Canyon Segment and Dos Lagos Segment:

Publicly circulate draft environmental initial study:  August 25, 2017

Public open house meeting:  September 12, 2017 at Trilogy Club House, 24503 Trilogy Parkway, Corona

Close the environmental document public comment period:  September 24, 2017

Final design:  Spring 2018
Begin construction:  Fall 2018 or upon acquiring all right-of-way

Construction duration:  approximately 12 months

Cost:  $23 million for construction, right-of-way, utilities, and engineering. 

Funding:  Measure A and other funding sources


  • El Cerrito Segment

Conceptual design:  In progress

Begin construction:  To be determined




Temescal Valley Projects location exhibit PDF