A project to convert the former southbound-only Richards Boulevard access just south of the American River to a standard signalized intersection was completed in August 2007; this improves access to existing and future development in the area, including redevelopment of a former rail yard, while slowing northbound traffic heading for the bridge and freeway. Another project converting Freeport Boulevard and 21st Street south of Broadway into two-way streets was also completed. 21st Street has carried northbound traffic since 1974, when Caltrans took it over. This will calm traffic while improving the intersection at the south end of the former one-way pair, which the RT Light Rail now crosses 21st Street just to the north of. In addition, the three blocks of F Street that carried southbound SR 160 from 12th Street to 15th Street have been calmed by the addition of a roundabout at 13th Street.