* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Sunday, August 24, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    What Are Our Predictions for Taylor Swift’s ‘Life of a Showgirl’ Based on What She’s Told Us So Far? – yahoo.com

    Uncover the Hidden Surprises in Taylor Swift’s ‘Life of a Showgirl’ – Can You Decode Her Clues?

    Bama Dining Serving Up New Food, Entertainment – UA News Center

    Bama Dining Launches Thrilling New Food and Entertainment Experiences

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Teaching older adults how to use technology – WWNY

    Empowering Older Adults to Master Technology with Confidence

    Denver man receives pacemaker using new technology – CBS News

    Denver Man’s Life Transformed by Revolutionary Pacemaker Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    What Are Our Predictions for Taylor Swift’s ‘Life of a Showgirl’ Based on What She’s Told Us So Far? – yahoo.com

    Uncover the Hidden Surprises in Taylor Swift’s ‘Life of a Showgirl’ – Can You Decode Her Clues?

    Bama Dining Serving Up New Food, Entertainment – UA News Center

    Bama Dining Launches Thrilling New Food and Entertainment Experiences

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Teaching older adults how to use technology – WWNY

    Empowering Older Adults to Master Technology with Confidence

    Denver man receives pacemaker using new technology – CBS News

    Denver Man’s Life Transformed by Revolutionary Pacemaker Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home General

LA Metro completes 5-year Purple Line tunneling project

April 16, 2024
in General
LA Metro completes 5-year Purple Line tunneling project
Share on FacebookShare on Twitter

An article from
site logo

Dive Brief

The agency, along with two separate joint ventures, completed work near the La Brea Tar Pits and around abandoned oil wells.

Published April 15, 2024

Matthew Thibault's headshot

A sparse amount of people linger on an underground platform, reachable by stairs, next to two sets of train tracks.

People gather in a Metro station on March 28, 2018 in Los Angeles, California.

Mario Tama via Getty Images

This audio is auto-generated. Please let us know if you have feedback.

Dive Brief:

The Los Angeles County Metropolitan Transit Authority has completed tunneling for the $2.4 billion D Line Subway Extension Project, also known as the Purple Line, the agency announced on April 2.
Metro will continue to work with two joint ventures — one of Skanska-Traylor-Shea, and another made of Tutor Perini and O&G Industries — to complete seven new underground stations, per the release. The first section of completed work is slated to open in 2025.
Metro referred to the tunnel, which took five years to complete, as a feat of modern engineering, and said the areas builders drilled under were among the densest and most geologically challenging in the Los Angeles region and nation.

Dive Insight:

This milestone didn’t come without hurdles, however. In October 2022, the project ground to a halt after LA Metro shut down the work Tutor Perini and O&G Industries were performing due to safety issues on a section of the extension. Work was allowed to resume that November following additional safety training.

Contractors used the latest tunnel boring machine technology to excavate approximately 40-60 feet per day, per the release. Four-hundred-foot-long, 21-foot-diameter earth digging machines use closed face, pressurized technology to minimize ground settlement during excavation. The devices also lined the tunnel with precast concrete segments, bolted together to form secure rings, which makes them water- and gas-tight and prevents related risks.

This is not LA Metro’s first time with the process — the same TBM technology was used on its 2009 Eastside Extension Project.

Challenging terrain

The contractors’ work was compounded by the difficulties of the environment they toiled in — the team had to work around abandoned oil wells, gassy ground and the La Brea Tar Pits, which exposed the team to tar sands. 

To deal with this problem, teams used horizontal directional drillings to probe the earth, which allowed the pros to identify and remove potential objects before any damage to the TBM equipment occurred, per the release. They also used the same method to navigate and avoid unmapped, abandoned oil wells underneath Beverly Hills High School.

“The D Line Subway Extension is one of the most complex engineering feats that Metro has undertaken,” said Lindsey Horvath, Chair of the LA County Board of Supervisors and Metro Board Member, in the release.

The second and third section of the project are scheduled to open in 2026 and 2027, respectively.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : ConstructionDive – https://www.constructiondive.com/news/la-metro-tunneling-purple-line/713151/

Previous Post

Out with the old: Modernizing subcontractor diversity with AI so everyone wins

Next Post

High-speed rail project in Texas gets high-level US, Japan support

Third annual event highlights cultural, ecological importance of Tawas Lake – Iosco County News Herald

Explore the Vibrant Culture and Stunning Ecology of Tawas Lake at This Year’s Exciting Third Annual Event!

August 24, 2025
UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

August 24, 2025
Center to advance hunting and conservation looks to tradition, science – NBC Montana

Center Pioneers New Era in Hunting and Conservation by Merging Tradition with Science

August 24, 2025
‘Hidden gem’ – the lifestyle village beating the property slump – Stuff

‘Hidden gem’ – the lifestyle village beating the property slump – Stuff

August 24, 2025
UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

August 24, 2025
Women’s football moves mountains in Pakistan – EL PAÍS English

Women’s football moves mountains in Pakistan – EL PAÍS English

August 24, 2025
Lifeguard, 82, Sets Impressive Guinness World Record After More Than 60 Years Lifeguarding – People.com

82-Year-Old Lifeguard Breaks Guinness World Record After Over 60 Years on Duty

August 24, 2025
Powell’s Rate Cut Signal Reflects Economy’s Delicate Position – Hindustan Times

Powell’s Rate Cut Signal Reflects Economy’s Delicate Position – Hindustan Times

August 24, 2025
Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

August 24, 2025
Hamilton County school board rejects mental health center contract – Chattanooga Times Free Press

Hamilton County School Board Rejects Contract for New Mental Health Center

August 24, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (787)
  • Economy (807)
  • Entertainment (21,686)
  • General (16,641)
  • Health (9,847)
  • Lifestyle (820)
  • News (22,149)
  • People (809)
  • Politics (816)
  • Science (16,019)
  • Sports (21,306)
  • Technology (15,788)
  • World (788)

Recent News

Third annual event highlights cultural, ecological importance of Tawas Lake – Iosco County News Herald

Explore the Vibrant Culture and Stunning Ecology of Tawas Lake at This Year’s Exciting Third Annual Event!

August 24, 2025
UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

UNT Ph.D. Grad Gives $2M to Launch Data Science Innovation Lab – Dallas Innovates

August 24, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version