Project Webpage  Construction Notices

Gavin Canyon Undercrossing Bridge Construction 

Summary 

 As part of the I-5 North County Enhancements Project, Metro’s contractor OHLA-USA, will be extending the existing Gavin Canyon Bridge to accommodate the new high-occupancy vehicle (HOV) lanes. This bridge crosses over The Old Road (Rd), located between Calgrove Bl and Weldon Canyon Rd.  

Construction will take place along the outside shoulders, center median, and along The Old Rd. Activities will include form, rebar, falsework, and concrete work.  

At the completion of construction, improvements are expected to enhance traffic flow and safety, reduce congestion, and make commuting smoother.  

This bridge extension is anticipated to be completed by Winter 2025

What to Expect & Traffic Control   

• Prepare for continued intermittent street closures and lane reductions of The Old Rd between Weldon Canyon Rd and Calgrove Bl, Monday through Friday from 9pm to 5am, and Saturdays as needed from 9pm to 7am, through December 2025. 

• Detour 1: Traveling northbound on The Old Rd, turn east on Sierra Hwy, continue onto northbound I-5, exit at Calgrove Bl. 

• Detour 2: Traveling southbound on The Old Rd, continue onto southbound I- 5 at Calgrove Bl, exit at Sierra Hwy. 

• Detour 3: Traveling southbound on SR-14, continue onto northbound I-5 connector, exit at Calgrove Bl, turn west on Calgrove Bl.

Essential Details 

• Work hours: Monday through Friday, from 9pm to 5am and 8pm to 10am (9pm to 7am on Saturdays as needed). Crews will begin to mobilize at 7pm.
• Expect speed limit reduction within the construction zone.
• Night work utilizing normal lane closures between 9pm and 5am.
• Additional closures lasting from 8pm to 10am.
• Local and pedestrian access will be maintained. 

Noteworthy 

Access to emergency responders will be maintained. Construction is a dynamic process. It is subject to weather conditions and information is subject to change. Visit the project website for the most up-to-date information and a weekly listing of closures scheduled.

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