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Flatiron Secures Contracts on Southern California Infrastructure Projects Valued at $200M

Agua Hedionda Lagoon and bridge along the North Coast Corridor initiative
Agua Hedionda Lagoon and bridge along the North Coast Corridor initiative
View of Eastbound State Route 91
View of Eastbound State Route 91
Fenton Parkway Bridge location and San Diego River
Fenton Parkway Bridge location and San Diego River
SAN DIEGO, CA — Flatiron is collaborating with construction partners and clients to deliver infrastructure projects designed to enhance mobility and safety while creating greater transportation options in Southern California.

“In addition to improving transportation, these projects will enhance environmental sustainability and quality of life for people in this region,” said Dale Nelson, Flatiron Executive Vice President for Operations. “Flatiron is committed to collaborating closely with construction partners, clients, and local authorities to minimize disruptions and ensure the successful completion of these projects.”

North Coast Corridor Segment 4C Project
The California Department of Transportation (Caltrans) has awarded the North Coast Corridor (NCC) Segment 4C collaborative delivery project to the joint venture of Flatiron, Skanska, and Stacy Witbeck. Slated for completion in 2026, this $72.5 million project marks the fourth collaboration of Flatiron with Caltrans on the NCC improvements initiative in the San Diego metro area — bringing the total project value to $737.5 million.

Key elements of the NCC Segment 4C project include:

  • Transportation Improvements: Adding new auxiliary lanes and reconfiguring Poinsettia Lane on- and off-ramps for more efficient traffic flow and pedestrian safety.
  • Environmental Protection: Slope rehabilitation of the Agua Hedionda freeway embankment and upgrades to the bridge barrier rail to enhance ecological sustainability.
  • Community Well-Being: Widening Chestnut Avenue undercrossing, constructing sound-barrier and retaining walls, and upgrading curb ramps to improve coastal access.
LA Metro Eastbound State Route 91 Project in Los Angeles County
The Los Angeles County Metropolitan Transportation Authority (LA Metro) has awarded Flatiron a $99.6 million contract for the Eastbound State Route 91 (EB SR-91) Atlantic to Cherry Improvements project. This project marks the fourth recent collaboration between LA Metro and Flatiron in the Los Angeles area.

The EB SR-91 project introduces an eastbound auxiliary lane between the I-710 freeway and the Atlantic Avenue on-ramp and the Cherry Avenue off-ramp. The endeavor will benefit Long Beach area commuters by improving traffic flow, reducing congestion, and enhancing safety.

Fenton Parkway Bridge Project in San Diego
San Diego State University (SDSU) has selected Flatiron to spearhead the Fenton Parkway Bridge Project, valued at $28 million, using the CMAR collaborative delivery method. Construction of Fenton Parkway Bridge is scheduled to begin in October 2024.
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The approximately 450-foot bridge will extend Fenton Parkway over the San Diego River to Camino Del Rio North, introducing a north-south roadway not subject to flooding and at grade with the trolley crossing. The planned bridge will have up to four spans and feature combined bicycle and pedestrian pathways to meet the community’s diverse transportation needs.

SITECH
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SITECH West
SITECH Southwest
SITECH
Your local Trimble Construction Division dealer
SITECH West
SITECH Southwest
SITECH
Your local Trimble Construction Division dealer
SITECH West
SITECH Southwest