The Sonoma Creek Bridge in California was widened and strengthened to withstand earthquakes without harming the nearby tidal marsh habitat. A team of government agencies and engineers worked together to ensure the project met environmental regulations and safety standards. Special care was taken to protect endangered species during construction. The new bridge design includes strong steel piles and concrete girders to support heavy loads and meet modern safety requirements. Despite the challenges, the project was finished on time, within budget, and with minimal impact on the environment.