I-5 OC-LA County Line (near CA 91) north to I-710

[andy3175]

A few web resources have been updated to include information on planned improvements on I-5 in southern Los Angeles County, which has already been under construction for the past year. The corridor improvements have been divided into three segments, with schedules as follows:

A - CA 91/OC Line north to I-605 - divided into six sub-projects; Carmenita began in Sept 2011 and the other areas began in winter 2012:
A1 - Coyote Creek Overcrossing/Marquardt Ave begin construction 1/2012 and end 4/2016
A2 - Artesia Blvd/Coyote Creek Overcrossing begin construction 7/2014 and end 12/2018
A3 - Shoemaker Ave/Silverbow Ave begin construction 8/2012 and end 4/2018
A4 - Silverbow Ave/Orr and Day overhead begin construction 8/2012 and end 4/2017
A5 - Orr and Day overhead and I-605 Interchange begin construction 7/2013 and end 12/2018
A6 - Carmenita Road Interchange Reconstruction - construction began in 2011 (considered a separate project)
B - I-605 north to I-710 - begin construction 2025 - project approval anticipated May 2017 and ROW acquisition anticipated to begin in May 2019
C - I-710 Interchange Reconstruction - begin construction 2025 - project approval anticipated May 2017 and ROW acquisition anticipated to begin in May 2019

http://www.dot.ca.gov/dist07/travel/projects/I-5/

The California Department of Transportation (Caltrans) proposes to improve Interstate 5 between State Route 91 and Interstate 710, a length of approximately 26 kilometers (16 miles), by widening to provide a minimum of 10 lanes. At present, I-5 consists of eight lanes from SR-91 to Beach Boulevard, six lanes from Beach Boulevard to I-605, and eight lanes from I-605 to I-710. The portion of I-5 in Orange County south of SR-91 has been widened to 10 lanes (one High Occupancy Vehicle lane and four mixed flow lanes in each direction with future provisions for 12 lanes).

This fact sheet provides more information on Segment A and its many subprojects, including a cost estimate for the work between the county line and I-605.

http://media.metro.net/projects_studies/cmia/images/K%20I-5%20South%20Web.pdf

This 6.7 mile project involves widening and construction of one High Occupancy Vehicle (HOV) lane and one general-purpose lane in each direction between the Orange County Line and Rte. 605. Eighteen structures (12 bridges and overcrossings and six undercrossings) will be upgraded with relocation/reconstruction of the Carmenita Ave. Interchange and major construction on the Valley View Ave. and Rosecrans Ave. Interchanges. The 50-year-old freeway segment also will be upgraded to conform to current highway design standards that include median shoulders and CHP enforcement areas.

Project Cost
CMIA Request: $387,000,000
Non-CMIA Funding: $768,000,000
Total Cost: $1,155,000,000 (Carmenita Interchange is separately funded)

Interchange, intersection, arterial and goods movement-related improvement projects including:
Carmenita Ave. IC - $251 million (funded separately)
Valley View Ave. IC - $53 million.
Valley View Ave. Grade Separation - $47 million
Improvements to 43 truck-impacted intersections.

http://www.ocregister.com/articles/county-345262-freeway-direction.html

See the nifty graphic - http://www.ocregister.com/articles/county-345262-freeway-direction.html?graphics

The article mentions a completion date for Segment A in 2016 rather than 2018, but the article was from 2013 and may not represent the most recent information.

[roadfro]

Seems like some awfully long construction seasons for these sub projects, 4-6 years. I get some structures are being completely rebuilt and the freeway widened, but that shouldn't take 4 years...especially in an area where you don't need seasonal winter shutdowns...

[sdmichael]

It takes longer as it isn't just widening a freeway. You're partially relocating the freeway with a minimum of closures, relocating utilities, relocating local roadways, and all this on a very busy freeway which has limited detour ability. So yeah, it might take longer. How would you propose to completely reconstruct a freeway in an urban area while it is still open?