I-5 Freeway Expansion Project Construction

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Upcoming closures, detours and activity


An easier drive for Southern California commuters is in progress. As road closure information is received from Caltrans, details will be posted regarding the I-5 Freeway Expansion Project in the City of Norwalk (Carmenita, Rosecrans/Bloomfield, and Norwalk/Imperial/Pioneer). For information on other segments along the I-5 corridor, please click on the Caltrans website www.I-5info.com and scroll down the map to the area you are interested in. Also, if you would like instant notifications via email, please click on the left side of the I-5info.com website to register your email address and the particular location you are interested in. If you have any questions, concerns, or suggestions you would like the City to share with Caltrans, please let us know so that we can bring it to their attention. You can call City Hall at (562) 929-5944 or email us at administration@norwalkca.gov.


Click on I-5 South Project Overview to get a big-picture view of the expansion. For specific project areas affecting Norwalk residents, see below.


Week of July 19 - July 26, 2019


This project is 84% complete.

Projected date of completion for the Florence Ave. Bridge:  Early April 2020

Also, please  go to our Twitter page at twitter.com/My5LA for project updates.

There are no lane closures scheduled for the week of July 19 through July 26. 

Due to the extensive rains this past winter, there were substantial delays in completion of the current phase of construction. 

Over the summer, the contractor will be excavating earth to lower lanes in the median of I-5 and then paving the new lanes. Then construction of falsework (temporary frame support)  for the second half of the bridge will continue. The target date to begin construction of the second half of the bridge is now September.  

The contractor has demolished the old freeway lanes in the median of I-5 south of the Florence Ave. Bridge. Crews are now excavating and lowering the roadway surface up to four feet passing under the bridge before repaving. Then construction of the second half of the Florence Ave Bridge will begin. The contractor will set up a "crusher" conveyor that will crush all of the concrete and asphalt that has been demolished into small aggregate that will be recycled to create base for the new lanes. Photos below from July 9: 

Florence 7-12-19

Florence 7-12-19 2 

The contractor poured another layer of blacktop on the Florence Ave on ramp to northbound I-5. Photo below from July 2: 

Florence 7-12-19 3

New lanes on I-5 north of the bridge and east of I-5.Photos below from June 25: 

Florence 6-25-19

 Florence 6-25-19 2

The contractor is constructing "falsework" (temporary frame support) for the second half of the Florence Ave. Bridge, just north of the existing bridge photos from July 16:



The Florence Ave on ramp to northbound I-5 , and the Florence Ave. off ramp from northbound I-5 will all remain closed until the second half of the Florence Ave. Bridge is complete. This is per request by the cities of Downey and Santa Fe Springs, to minimize traffic congestion until the three additional bridge lanes are provided to handle the increase in vehicles. Construction of the second half of the bridge is projected to begin by late summer.


Construction on this project is 96% complete.

Open to traffic: *Summer 2019. 

Also, please go to Twitter page at twitter.com/My5LA for project updates.

There may be some overnight closures of Imperial Highway, Norwalk Boulevard, and Pioneer Boulevard at I-5 starting Wednesday, July 15 to finalize striping and install traffic signals. Updates will be posted here.

Please note the following scheduled overnight surface street closures for final striping:

From 8:30 p.m. Friday, July 19 until 6 a.m. Saturday, July 20:
Norwalk Blvd. scheduled to be closed from Civic Center Dr. to Olive St.   
The Norwalk Blvd. off ramp from northbound I-5 and the Norwalk Blvd. frontage road on ramp to southbound I-5 will also be closed.
Access for the fire station on Adoree St. will always be permitted.

The Imperial Highway on ramp to northbound I-5 scheduled to be closed. 

Pioneer Blvd. will remain open from Imperial Highway to Crewe St. in Norwalk.

Detours signage will be in place. All closures are for separate nights and will re-open each morning. All closures are subject to change. Check twitter.com/My5LA for updates.

When the final configuration of Imperial Highway at I-5 is complete, traffic will be able to access the Imperial Highway on ramp to northbound I-5 from eastbound or westbound Imperial Highway and from northbound Adoree Street at a traffic signal.

Workers are completing decorative concrete and tile work on walls under the I-5 bridges on Imperial Highway, Norwalk Blvd., and Pioneer Blvd.

Photos below are from Pioneer Blvd under the I-5 Bridge on June 5 and June 18. Paving is complete and the wall is nearly complete. 

Pioneer 6-26-19

Pioneer 6-26-19 2 

Photo below are from the San Antonio Bridge on May 28: 

San Antonio

Photo below are from the Imperial Highway Bridge on May June 5 and June 18. Paving and wall are complete: 



If crews work on Imperial Highway, Norwalk Boulevard and Pioneer Boulevard at I-5, one lane in each direction may be closed on each street with traffic control during the daytime, between 8:30 a.m. and 3:30 p.m.


Construction on this project is 97% complete. The work that remains will include landscaping and finishing work.


All work has been completed on the Carmenita Road Interchange project.


Construction on this project is 44% complete.

Projected dates:
Completion of first half of Valley View Ave. Bridge: Revised to *late 2019.
Completion of second half of Valley View Ave. Bridge: Revised to *late 2021.
Firestone Blvd. reverts to two lanes in each direction at Valley View Ave: End of 2021.

I-5  Valley View Ave. Interchange project open to traffic: Revised to End of 2021

Also, please go to our Twitter page at twitter.com/My5LA for project updates.

On Thursday, July 11, final concrete was poured on the deck of the center section of the first half pf the new Valley View Ave Bridge. This will be concrete surface of the roadway. Photos below: 


Valley View 7-12-19 3

Valley View 7-12-19 4Workers are now securing plywood to the beams to build the "soffit" (deck underside) for the future Valley View Ave offramp from southbound I-5 that will connect the ramp to the deck of the bridge. Photos below from June 11, June 18 and July 2:



On the future Firestone Blvd. ramp to the Valley View Avenue Bridge, concrete has been poured on the "sofft" (underside of the deck) and inside the stem walls. Workers are removing the forms. Photos below from June 25 and July 9:   

Valley View 7-12-19 7Valley View 7-12-19 8

In La Mirada, the contractor is constructing new lanes of northbound I-5 between Knott Ave. and north of Trojan Way near the new Coyote Creek Bridge. The contractor has poured the final layer of concrete. Photos below from June 25, July 2 and July 9:

La Mirada 7-12-19


La Mirada 7-12-19 3

La Mirada 7-12-19 2Valley View Ave. will be elevated to meet with the new Valley View Ave. Bridge. In turn, N. Firestone Blvd. will be elevated to meet Valley View Ave. In preparation for these modifications, N. Firestone Blvd. is now reduced to one lane in each direction between Gateway Dr. and Valley View Ave. 

Trucks 2500 lbs. or more and / or at least 25’ long will not be permitted to:
• Drive on N. Firestone Blvd. between Valley View Ave. and Gateway Dr.
• Turn left or right onto N. Firestone Blvd. from Valley View Ave.
• Turn left from the northbound I-5 Valley View Ave. exit ramp at Gateway Dr.
to access Valley View. They must turn right onto N. Firestone Blvd.

Access to all local businesses will remain open.

Through the remainder of this project, there will be recurring closures of:

N. Firestone Blvd. between Valley View Ave. and Gateway Dr.

Valley View Ave. between Alondra Blvd. and Park Place.

Access to businesses within those closure parameters will ALWAYS be permitted. Secure the attention to workers on scene to allow access, if necessary.

N. Firestone Boulevard is CLOSED between Knott Avenue and Trojan Way in La Mirada until at least April of 2019 to prepare for the widening of I-5 and to allow demolition and reconstruction of the bridge over Coyote Creek. N. Firestone Boulevard will be rebuilt to the east. Closure and detour map below:


The City of La Mirada has requested increased assistance from the La Mirada Sheriff's Department enforcing the traffic regulations prohibiting large trucks from using N. Firestone Blvd. between the I-5 on and off ramps and Valley View Ave. Caltrans will secure enforcement assistance from the CHP and will be adding more signs to divert large trucks from the restricted portion of roadway.

Questions and Answers:

1. When construction is complete, will S. Firestone Blvd. still run through from Valley View Ave to Artesia Blvd.? 

2. When N. Firestone Blvd. is re-opened between Knott Ave. and Trojan Way, will traffic signals be installed at those two intersections?
The construction plans currently provide for stop signs only. Any changes would need to be requested by the city of La Mirada.

3. Will N. Firestone Blvd be rebuilt from Trojan Way all the way to the I-5 ramps? Yes

*DISCLAIMER: Due to the dynamic nature of construction, please note that all dates and times are subject to change due to unforeseen operational factors or inclement weather.



For information regarding upcoming closures, detours and other construction activity, be sure to check out the project Google map. This map will be updated in real time, with the latest information regarding project construction. Click the image below to view the map.






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