Safe & Sound Bridge Improvement Program Missouri Innovative approach replaces 554 bridges with speed, efficiency • Project is nation’s first design-build system-improvement project • Bridge closures limited to 45 days on average • Collaboration, efficiencies add speed, reduced costs HNTB was part of a joint venture for the Safe & Sound Bridge Improvement program, helping the Missouri Department of Transportation replace 554 bridges in the nation’s first design-build system-improvement project. HNTB designed 12 non-standard bridges, completing four especially quickly at MoDOT’s request. Lessons from the first dozen informed standards for the remaining bridges: • Separate teams focused on completing one of three processes repeatedly: 1) constructability and design review, 2) typ

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