PLAN AHEAD

Directional Freeway, Freeway Lane and Ramp Closures

55-Hour Freeway Lane and Ramp Closures for Paving

• Scheduled for Friday, September 23 at 10:00 p.m. through Monday, September 26 at 5:00 a.m. three lanes of westbound (WB) I-10 from Holt Boulevard to Vineyard Avenue will be closed. Two lanes will remain open. The WB Vineyard Avenue off-ramp and the WB Vineyard Avenue loop and straight on-ramps will also be closed. Detour routes will be posted.

Directional Freeway Closures for Girder Installation

• Wednesday, September 28 and Thursday, September 29 from 10:00 p.m. to 5:00 a.m. WB I-10 will be closed at Euclid Avenue. Southbound (SB) Euclid Avenue will also be closed. Detour routes will be posted. 



• Friday, September 30 and Saturday, October 1 from 11:00 p.m. to 7:00 a.m. Eastbound (EB) I-10 will be closed at Euclid Avenue. Motorists will be routed off and on the freeway using the Euclid Avenue ramps. Euclid Avenue over I-10 will be closed. Detour routes will be posted. 

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:

10-Day Ramp Closure for Realignment: 

• WB 4th Street on- and off-ramps are scheduled to close on Tuesday, October 4 at 5:00 a.m. through Friday, October 14 at 5:00 a.m. Detour routes will be posted. 

55-Hour Freeway Lane and Ramp Closures for Pavement Operations: 

• Scheduled for October, two lanes of WB I-10 from Monte Vista Avenue for approximately 1/2 mile will be closed. Three lanes will remain open. The WB Monte Vista Avenue on-ramp will also be closed. More information will be provided.

Vineyard Bridge Partial Demolition and Freeway Closures

• The west side of the Vineyard Avenue bridge will be demolished during nightly closures. During demolition, Vineyard Avenue over I-10 and both directions of the I-10 will be closed. More information will be provided.

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 building 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 in progress. Central Avenue may be reduced to one lane in each direction during nighttime hours. Daytime and nighttime activities include pouring concrete for the bridge footings and 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 closed under the I-10 to vehicular traffic through the middle of November. Daytime and nighttime activities include backfilling soil and building portions of the bridge.

• Mountain Avenue: The outer portions of the EB and WB I-10 over Mountain Avenue were demolished and are being rebuilt into a wider configuration. This work is scheduled to be complete in fall 2022. Daytime and nighttime activities include building portions of the bridge and utility work.

• San Antonio Avenue: San Antonio Avenue is closed to prepare the bridge for demolition. The bridge was demolished in late August. The new bridge is scheduled to open in spring 2023. Daytime activities include installing steel plates into the ground (shoring) and earthwork.

• 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 backfilling soil, removing steel plates from 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.

• Campus Avenue: Campus Avenue over I-10 was demolished in October 2021. The new bridge is scheduled to open in winter 2022. Daytime and nighttime activities include removing steel plates from the ground (shoring) and utility work.

• 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. Grove Avenue under I-10 will be closed intermittently during nighttime hours. Daytime activities include 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 and may be closed during nighttime hours (businesses will remain accessible). Daytime and nighttime activities include installing soundwalls 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 utility work.

• Cucamonga Wash Bridge: The widening of the I-10 over the Cucamonga Wash is complete.

• 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. 



• Scheduled for Friday, September 23 at 10:00 p.m. through Monday, September 26 at 5:00 a.m. three lanes of WB I-10 from Holt Boulevard to Vineyard Avenue will be closed. Two lanes will remain open.

• Scheduled intermittent nighttime connector ramp closures (11:00 p.m. to 5:00 a.m.):
• 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 Fairplex Drive and I-15. 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.

• As part of the 55-hour closure the following ramps will be closed:
• Friday, September 23 at 10:00 p.m. through Monday. September 26 at 5:00 a.m. 
• WB Vineyard Avenue off-ramp 
• WB Vineyard Avenue straight on-ramp
• WB Vineyard Avenue loop on-ramp

• EB Holt Boulevard On-Ramp closed through Friday, September 30, at 6:00 a.m. 



• 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. 

• 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.

• Euclid Avenue closures during girder installation: 
• SB Euclid Avenue closed Wednesday, September 28 and Thursday, September 29 from 10:00 p.m. to 5:00 a.m.
• NB/SB Euclid Avenue closed Friday, September 30 and Saturday, October 1 from 11:00 p.m. to 7:00 a.m. 

• Benson Avenue under I-10 closed through Wednesday, November 9

• Daytime and/or nighttime lane closures (streets will remain open):
• Monte Vista Avenue, Palo Verde Avenue, Central Avenue, Mountain Avenue, San Antonio Avenue, Euclid 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
• 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

Caltrans District 8 is performing pavement work as part of the SR 60 Corridor Improvement Project at Ramona Avenue Overcrossing in the City of Chino. There will be a full 55-hour weekend closure of the WB SR 60 at Ramona Avenue beginning Friday, September 23 at 11:00 p.m. through Monday, September 26 at 5:00 a.m. Traffic will be rerouted at the Ramona Avenue off-ramp back to SR 60. For more information on this project click here.