• About

    Building landmark projects since 1947

    Founded in Boulder, Colorado, in 1947, Flatiron now operates across the U.S. and Canada, specializing in projects from common to complex.

    Building landmark projects since 1947

    Founded in Boulder, Colorado, in 1947, Flatiron now operates across the U.S. and Canada, specializing in projects from common to complex.

    Company
    • About Flatiron
    • Leadership
    • Core Values
    • History
    • Awards
  • Projects

    We transform infrastructure

    Flatiron builds highways, bridges, airports, rail transit, dams, water facilities and underground projects delivering innovative solutions that meet challenging criteria.

    Markets
    Bridges
    Highways
    Rail
    Water
    Airports
    Underground
    Dams
    View Project Spotlights
     
    Delivery
    • Bid-Build
    • CM/GC
    • CMR
    • Design-Build
    • Engineering
    • Progressive Design-Build
    • Public-Private Partnerships
    Delivery
    • Bid-Build
    • CM/GC
    • CMR
    • Design-Build
    • Engineering
    • Progressive Design-Build
    • Public-Private Partnerships
  • Commitment

    Beyond construction:

    Our ongoing commitment

    Beyond our commitment to delivering outstanding projects, Flatiron people demonstrate a commitment to safety and learning, sustainability, our clients and partners, and the communities where we live and work.

    Safety
    Environment

    Partnering
    Community
    Bridges to Prosperity
    Through our non-profit partnership, we build much-needed footbridges in rural communities around the world.
  • Careers
    Search for Jobs

    Looking for challenging projects, innovative teams and a place to advance your career? Learn more about opportunities with Flatiron.

    Looking for challenging projects, innovative teams and a place to advance your career? Learn more about opportunities with Flatiron.

    Find your job
    Life at Flatiron
    Benefits
    Who We Hire
  • Locations

    Delivering successful projects across North America.

    Corporate headquarters
    Broomfield, Colorado
    303-485-4050
    Northwest Division
    Concord, California
    707-742-6000
    Renton, Washington
    425-420-9900
    Canadian Division
    Richmond, British Columbia
    604-244-7343
    Calgary, Alberta
    403-567-9645
    Mid-Atlantic Division
    Morrisville, North Carolina
    919-460-5393
    Southwest Division
    San Diego, California
    760-916-9100
    Chino, California
    909-597-8413
    Central Division
    Denver, Colorado
    303-574-3193
    San Marcos, Texas
    512-916-9260
    E.E. Cruz
    Whitestone, New York
    212-431-3993
  • News
  • Home
  • /
  • Projects
  • /
  • I-405 Renton to Bellevue Widening and Express Toll Lanes
  • /
  • WSDOT I-405 GEC

WSDOT I-405 GEC

Categories

  • Awards & Recognition
  • Essential Since 1947
  • In the Community
  • Innovation Spotlight
  • Life at Flatiron
  • Media Coverage
  • Press Release
  • Project News
  • Safety & Environment
  • Uncategorized
See all news
  • Careers
  • Code of Conduct
  • Equal Opportunity Employer
  • Terms of Service
  • Privacy Policy
  • Contact
A HOCHTIEF Company
© Copyright 2023 | Flatiron Construction Corp
Printed from: https://www.flatironcorp.com/project/i-405-renton-to-bellevue-widening-and-express-toll-lanes/wsdot-i-405-gec-2/