home to endangered species. Because of its new status, environmental studies were needed in order to continue the project. Soon after, the project was split into different phases to handle problems with particular areas. It was first divided between the newly created marshlands and the section between Sonoma Blvd. (SR 29) and I-80. With Marine World being relocated, the city was able to the widen the latter section and build an overpass across Fairgrounds Drive in 1992. "Blood Alley" While the Vallejo section of SR 37 was being updated, another problem with the route would hinder its progress. The section between Sears Point and Mare Island was plagued with fatal accidents, earning its nickname of "Blood Alley". Between 1966 and 1970, 27 people lost their lives on it. In a preliminary effort to reduce the fatalities, officials established both a daylight test section, requiring all cars to keep their headlights on during the day, and passing lanes. However, these efforts were ineffective. In 1993, local resident Jim Poulos campaigned to have a barrier erected after the death of his 18-year-old son, Frankie, on "Blood Alley". At this time, the situation with this stretch only worsened as the death toll between 1990 and 1996 rose to thirty-one. At first, Caltrans thought the barrier would make matters worse since it would be difficult for emergency vehicles to attend to accidents; environmental issues were also cited. Caltrans was waiting for the ability to create a causeway to span the area instead. Poulos continued his campaign despite opposition, and was granted the barrier in 1995. The barrier was not built without controversy, as it also eliminated the passing lanes. However, since the barriers were built, there were no longer any crossover accidents as of 2005. While the median was built, a few problems needed to be resolved in order for the road to work both safely and in an environmentally friendly way. Emergency personnel needed to quickly access accidents and provide them easy transport to nearby hospitals. To alleviate this problem, Caltrans implemented electric gate technology, which would allow emergency vehicles to cut through certain parts of the median. The other problem was to both protect the plant life and the salt marsh harvest mice residing around the highway. As a result, crews placed timbers and sheeting to protect foliage, and added holes into the median barrier to allow the mice to cross the