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 September 13 - September 20, 2019


This project is 84% complete.

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

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

Due to the extensive rains this past winter, there were substantial delays in completion of the current phase of construction. Current construction hours are 6:30 a.m. to 3 p.m. weekdays.

Over the summer, the contractor excavated up to four feet and lowered lanes in the median of I-5. Workers are currently pouring lean concrete bases for the new freeway lanes. Construction of falsework (temporary frame support) for the second half of the bridge started west of I-5. The target date to begin construction of the second half of the bridge is now Autumn of 2019.  

There are no street or freeway closures scheduled in conjunction with this project for the week of September 13 through 20.

The contractor has been pouring lean concrete base for the new lanes in median of I-5 on both sides of the Florence Ave. Bridge.


Florence 9-11 

The contractor is constructing "falsework" (temporary frame support) for the second half of the Florence Ave. Bridge, just north of the existing bridge and west of I-5. Photos below:



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 autumn.


Construction on this project is 96% complete.

Date of completion:  This project is primarily complete as of August 1, 2019. (Punch list & plant establishment in progress).

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

To access northbound I-5 from Norwalk Blvd. use Adoree St. parallel to I-5 north to Imperial Highway. The traffic signal allows traffic to cross Imperial Highway to the on ramp to northbound I-5.

Photo of new decorative concrete work on wall and newly paved street surface under the San Antonio Bridge on July 23: 

Imperial 7-23

New signals have been installed at the Imperial Highway Interchange at I-5 and workers finalized sign installation this week.


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 46% 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.

There are no street or freeway closures scheduled in conjunction with this project for the week of September 13 through September 20.

The contractor continues construction of the deck on the railroad overhead on the Valley View Avenue Bridge. Permanent steel decking was installed between the girders. Photos below from September 3 and September 10:

Valley View 9-11

Valley View 9-11 2

On the future Valley View off ramp from southbound I-5, the first layer of concrete was poured over the stem walls and soffit of the deck on the night of Tuesday, September 3.


Valley View 9-11 3jpg

Valley View 9-11 5

On the future Firestone Blvd. ramp to the Valley View Ave. Bridge, the final layer of concrete was poured. The concrete is now curing under a layer of white sealant.

Valley View 7-23


Demolition of the Coyote Creek Bridge west of I-5 in Cerritos is complete. The water in the creek has been diverted using plastic, sand bags, and K-rail. The contractor is constructing the foundation for the new bridge. Crews are installing rebar, building shoring for the foundation piers, and pile driving steel pipe piles.


IMG_2415Valley 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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