PLAN AHEAD! 

Directional Freeway Closures For Utility Installation

The eastbound (EB) and westbound (WB) I-10 will be closed as crews install a temporary water pipe across San Antonio Avenue over I-10.

• Wednesday, August 3 at 11:00 p.m. to 5:00 a.m. WB I-10 will be closed from Euclid Avenue to Mountain Avenue
• Thursday, August 4 at 11:00 pm. to 5:00 a.m. EB I-10 will be closed from Mountain Avenue to Euclid Avenue



Detour routes will be posted. Please expect delays and use alternate routes. 

San Antonio Avenue Bridge Closure 

San Antonio Avenue over I-10 will close to all motorists, bicyclists, and pedestrians on Friday, July 29 at 10:00 p.m. to prepare for the bridge to be demolished in late-August. The new bridge is anticipated to open in spring 2023. 

Detour routes will be posted and include Mountain Avenue and Euclid Avenue. More information will be provided prior to demolition.

As construction continues on the I-10 Express Lanes, crews are working throughout the ten-mile corridor on demolition and reconstruction of bridges, retaining walls, sound walls, utility relocation, and pavement rehabilitation. There are several street and ramp modifications, freeway closures, 55-hour lane closures, and 10-day ramp closures being scheduled. Dates are subject to change. Additional information including detours will be shared and posted to the project Google Map at goSBCTA.com/i10corridor. Upcoming activities include:

WB I-10 Over Monte Vista Avenue Partial Demolition: 

• On Friday, August 5 and Saturday, August 6 from 10:00 p.m. to 10:00 a.m. Monte Vista Avenue under I-10 and the WB Monte Vista Avenue on- and off-ramps will be closed while a portion of the I-10 shoulder is removed

10-Day Ramp Closures for Pavement Operations: 

• EB Milliken Avenue on-ramp is scheduled to close on Tuesday, August 2 at 6:00 a.m. through Friday, August 12 at 6:00 a.m.

Eighteen bridges throughout the corridor are being replaced, widened, or improved to accommodate the widening of the freeway. Work on the bridges may be loud and you may feel vibration at times during both daytime and nighttime hours.

Below is an overview of the current bridge work:

• San Antonio Creek Channel: The I-10 over San Antonio Creek is being widened. This work began in August 2021 and is anticipated to be complete in summer 2023.

• Monte Vista Avenue: Crews continue to relocate underground utilities at Monte Vista Avenue and are building a new center median of the freeway. Work on Monte Vista Avenue began in spring 2020 and is anticipated to be complete in summer 2023. Monte Vista Avenue under I-10 is reduced to one lane in each direction during daytime hours and will be closed nightly from 9:00 p.m. to 5:00 a.m. Monday through Saturday. Daytime and nighttime activities include installing steel plates into the ground (shoring), demolishing portions of the bridge, and relocating utilities and drainage.

• Central Avenue: A portion of the EB and WB I-10 shoulder over Central Avenue was removed. The EB widening is complete and the WB side is scheduled to be complete in summer 2022. Central Avenue may be reduced to one lane in each direction during nighttime hours. Daytime and nighttime activities include building portions of the bridge walls.

• Benson Avenue: A portion of the EB and WB I-10 shoulder over Benson Avenue was removed and is being rebuilt into a wider configuration. This work is scheduled to be complete in summer 2023. Benson Avenue is reduced to one lane in each direction during daytime hours and may be intermittently closed during nighttime hours. Daytime and nighttime activities include earthwork and building portions of the bridge walls.

• Mountain Avenue: The outer portions of the EB and WB I-10 over Mountain Avenue was demolished and will be rebuilt into a wider configuration. This work is scheduled to be complete in fall 2022. Daytime and nighttime activities include backfilling soil, erecting temporary support structures (falsework), and drainage work.

• San Antonio Avenue: San Antonio Avenue will close Friday, July 29, 2022 to prepare the bridge for demolition. Bridge demolition is scheduled to occur in late-August and the new bridge is scheduled to open in spring 2023. Daytime activities include installing temporary support structures (falsework) and utility work. During nighttime hours a temporary utility bridge will be installed. 

• Euclid Avenue: Crews demolished and rebuilt the east side of the bridge. The west side of the bridge was demolished in April 2022 and is expected to be complete in fall 2022. Daytime and nighttime activities include installing steel plates into the ground (shoring) and building portions of the bridge.

• Sultana Avenue: The Sultana Avenue bridge over I-10 is now open. During daytime hours, Sultana Avenue may be reduced to one lane with flaggers directing traffic while bridge fencing is installed.

• Campus Avenue: Campus Avenue over I-10 was demolished in October 2021. The new bridge is scheduled to open December 2022. Daytime activities include installing portions of the bridge.

• 6th Street: 6th Street over I-10 was demolished in October 2021. The new bridge is anticipated to open summer 2023.

• Grove Avenue: A portion of the EB and WB I-10 shoulder over Grove Avenue was removed in December 2020. Work is expected to be complete in summer 2022. Grove Avenue under I-10 will be closed nightly. Daytime activities include installing approach slabs and pouring concrete.

• 4th Street: Crews continue to relocate underground utilities at 4th Street and are building a new wider section of the EB side of the freeway. Work on 4th Street began in spring 2020 and is anticipated to be complete in fall 2023. 4th Street between El Dorado Avenue and Baker Avenue is reduced to one lane in each direction during daytime hours. Daytime and nighttime activities include building portions of the bridge, backfilling soil, and utility installation and relocation.

• Vineyard Avenue: The east side of Vineyard Avenue over I-10 was partially demolished in March 2021 and is being rebuilt into a wider footprint to accommodate the Express Lanes. Work is expected to be complete in spring 2023. Vineyard Avenue over I-10 may have reduced lanes during daytime and nighttime hours. Daytime and nighttime activities include building approach slabs and utility work.

• Cucamonga Wash Bridge: The EB I-10 over the Cucamonga Wash is being widened. Work began in September 2021 and is anticipated to be complete in summer 2022.

• Day Canyon Channel: The widening of the I-10 over Day Canyon Channel is complete.

Freeway lane closures are necessary for crews to remove trees, perform maintenance, and demolish and rebuild retaining walls, sound walls, and bridges. Detour routes are posted. 

• Wednesday, August 3 from 11:00 p.m. to 5:00 a.m. the WB I-10 will be closed from Euclid Avenue to Mountain Avenue 



• Thursday, August 4 from 11:59 p.m. to 6:00 a.m. the EB I-10 will be closed from Mountain Avenue to Euclid Avenue

• Scheduled intermittent nighttime connector ramp closures (11:00 p.m. to 5:00 a.m.):
• Southbound (SB) I-15 to WB I-10
• Northbound (NB) I-15 to WB I-10
• EB I-10 to NB/SB I-15
• WB I-10 to NB/SB I-15

• Intermittent nighttime lane closures (9:00 p.m. to 5:00 a.m.): EB and WB I-10 between Fairplex Drive and I-15. At least one lane in each direction on I-10 will remain open.

• Intermittent daytime lane closures: EB and WB I-10 between Indian Hill Boulevard and Euclid Avenue. Four lanes in each direction on I-10 will remain open. These closures will occur between 9:00 a.m. and 2:00 p.m.

Intermittent nighttime EB and WB I-10 on- and off-ramp and ramp lane closures will occur throughout the project corridor. Detour routes are posted. Please check the Google Map for the most updated information.

• WB Euclid Avenue on-ramp from SB Euclid Avenue closed in mid-May for approximately seven months. Motorists can access the WB Euclid Avenue loop on-ramp to enter the WB I-10. 

• EB Monte Vista Avenue on-ramp closed in August 2020 and will be closed for approximately two years. Detour routes include Arrow Highway and Palo Verde Street to Central Avenue.

• EB Milliken Avenue on-ramp will close on Tuesday, August 2 at 6:00 a.m. through Friday, August 12 at 6:00 a.m.

• WB Vineyard Avenue (straight) on-ramp closed through Friday, August 5 at 5:00 a.m.

• WB Monte Vista Avenue on- and off-ramps will be closed Friday, August 5 and Saturday August 6 from 10:00 p.m. to 10:00 a.m. 

• Scheduled intermittent nighttime EB and/or WB on- and off-ramp closures (detour routes will be posted): Indian Hill Boulevard, Monte Vista Avenue, Mountain Avenue, Euclid Avenue, 4th Street, Vineyard Avenue, Holt Boulevard, Archibald Avenue, Haven Avenue, Milliken Avenue, and Etiwanda Avenue.

Crews are removing and building sound walls and retaining walls, relocating utilities, and removing trees on several local streets adjacent to the I-10; at times this work may be loud and you may feel vibration. One side of the sidewalk will always remain open. Flaggers may be onsite to direct traffic. Please check the Google Map for the most updated information including closures, detours, and wall locations.

• Daytime and/or nighttime lane closures (streets will remain open):
• Monte Vista Avenue, Palo Verde Avenue, Central Avenue, Mountain Avenue, Benson Avenue, San Antonio Avenue, Euclid Avenue, Sultana Avenue, Grove Avenue, 4th Street, Princeton Avenue, and Vineyard Avenue

• Nighttime street closures (detour routes will be posted); businesses will remain accessible:
• Monte Vista Avenue: NB/ SB street closed under I-10
• Palo Verde Street: WB street closed from Central Avenue to Monte Vista Avenue
• Benson Avenue: NB/SB street intermittently closed under I-10
• Euclid Avenue: SB street closed over I-10
• Grove Avenue: NB/SB street intermittently closed under I-10
• 4th Street: NB/SB street closed under I-10
• Vineyard Avenue: NB/SB street intermittently closed over I-10 

• Retaining wall and sound wall locations:
• EB I-10: intermittently from Mountain Avenue to Archibald Avenue
• WB I-10: approaching from 4th Street to Grove Avenue, and intermittently from Campus Avenue to Central Avenue