Tunnels – Page 20 – Southland Holdings

Highway 41, Phase IV Tunnel

Highway 41, Phase IV Tunnel https://www.southlandholdings.com/wp-content/uploads/2025/09/Highway%204,%20Phase%20IV%20Tunnel_01.JPG 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Highway%204,%20Phase%20IV%20Tunnel_01.JPG September 23, 2025 September 23, 2025

Completed in 2017 by Southland Contracting, the Highway 4, Phase IV Tunnel Project consisted of installation of approximately 3,400 linear feet of 84-inch liner plate tunnel with 42-inch ductile iron…

Bellvue Transmission Pipeline North Segment – Phase 2

Bellvue Transmission Pipeline North Segment – Phase 2 https://www.southlandholdings.com/wp-content/uploads/2025/09/Bellvue%20Transmission%20Pipeline%20North%20Segment_01.JPG 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Bellvue%20Transmission%20Pipeline%20North%20Segment_01.JPG September 23, 2025 September 23, 2025

Completed in 2018 by Southland Contracting, the Bellevue Transmission Pipeline North Segment – Phase 2 Project consisted of installation of approximately 2,500 linear feet of 88-inch tunnel – supported with…

Kaneohe-Kailua Sewer Tunnel Wastewater Conveyance & Treatment Facility

Kaneohe-Kailua Sewer Tunnel Wastewater Conveyance & Treatment Facility https://www.southlandholdings.com/wp-content/uploads/2025/09/Kaneohe%20Kailua%20Sewer%20Tunnel_01.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Kaneohe%20Kailua%20Sewer%20Tunnel_01.jpg September 23, 2025 September 23, 2025

Completed in 2019 by Southland Contracting, the Kaneohe-Kailua Sewer Tunnel Wastewater Conveyance & Treatment Facility Project was delivered to convey wastewater from the Kaneohe Wastewater Pre-Treatment Facility to Kailuas Regional…

C-13 Broadway Corridor, Package B

C-13 Broadway Corridor, Package B https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2019 by Southland Contracting, the C-13 Broadway Corridor, Package B Project consisted of the construction of 510 linear feet of 120-inch liner plate siphon tunnel lined with one…

Deep Rock Tunnel Connector Pump Station

Deep Rock Tunnel Connector Pump Station https://www.southlandholdings.com/wp-content/uploads/2025/09/Deep%20Rock%20Tunnel%20Connector_01.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Deep%20Rock%20Tunnel%20Connector_01.png September 23, 2025 September 23, 2025

Completed in 2019 by Southland Contracting, the Deep Rock Tunnel Connector Pump Station Project was an effort to improve the water quality for the residents of the City of Indianapolis,…

Hanlan Feedermain and Mississauga City Centre Watermain (Contract 3)

Hanlan Feedermain and Mississauga City Centre Watermain (Contract 3) https://www.southlandholdings.com/wp-content/uploads/2025/09/Hanlan%20Feedermain%20and%20Mississauga%20City%20Centre%20Watermain_01.jpeg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/Hanlan%20Feedermain%20and%20Mississauga%20City%20Centre%20Watermain_01.jpeg September 23, 2025 September 23, 2025

Completed in 2019 by Southland Contracting, the Hanlan Feedermain and Mississauga City Centre Watermain (Contract 3) Project consisted of the installation of 8-foot diameter pipes to carry water from the…

Phase V West Ashley Sewer Tunnel and Influent Pump Station

Phase V West Ashley Sewer Tunnel and Influent Pump Station https://www.southlandholdings.com/wp-content/uploads/2025/09/West%20Ashley%20Sewer%20Tunnel_001.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/West%20Ashley%20Sewer%20Tunnel_001.jpg September 23, 2025 January 26, 2026

Completed in 2020 by Southland Contracting, the Phase V West Ashley Sewer Tunnel and Influent Pump Station Project consisted of the replacement of an existing sewer tunnel, the construction of…

E-19 Sequin Road to Nacogdoches Road, Segment 1

E-19 Sequin Road to Nacogdoches Road, Segment 1 https://www.southlandholdings.com/wp-content/uploads/2025/09/E19%20Sequin%20Rd_001.jpg 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/2025/09/E19%20Sequin%20Rd_001.jpg September 23, 2025 September 23, 2025

Completed in 2020 by Southland Contracting, the E-19 Sequin Road to Nacogdoches Road, Segment 1 Project consisted of the replacement and upsizing of 3.1 miles of 48-inch gravity wastewater mains…

Bois d’Arc East Fork Trinity River Tunnel – Segment E

Bois d’Arc East Fork Trinity River Tunnel – Segment E https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2023 by Southland Contracting, the Bois d’Arc East Fork Trinity River Tunnel – Segment E Project consisted of numerous individual components that must be orchestrated concurrently to collect,…

Integrated Pipeline (IPL) Section 17 Trinity River Tunnel Crossing

Integrated Pipeline (IPL) Section 17 Trinity River Tunnel Crossing https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png 1000 750 Southland Holdings Southland Holdings https://www.southlandholdings.com/wp-content/uploads/Southland_Holdings_Stacked.png September 23, 2025 September 23, 2025

Completed in 2022 by Southland Contracting, the Integrated Pipeline (IPL) Section 17 Trinity River Tunnel Crossing Project consisted of the installation of approximately 11,700 linear feet of 108-inch steel water…