and interchanging with Interstate 5. At Telegraph Road at the Downey-Pico Rivera city limits, Lakewood Boulevard turns into Rosemead Boulevard. Rosemead Boulevard continues north through Pico Rivera (where this segment of SR 19 has been relinquished to the city as well) to Gallatin Road. The hidden SR 164, but signed as part of SR 19, begins north of Gallatin Road, traveling along Rosemead Boulevard across Whittier Narrows Dam before entering the Whittier Narrows Recreation Area and intersecting with State Route 60. After this, the road enters South El Monte before crossing the Rio Hondo and straddling the city boundary between Rosemead and El Monte. It then intersects with Interstate 10. This portion of Rosemead Boulevard between Gallatin Road and Interstate 10 is still maintained by the state and built to expressway standards. State maintenance ends again at the Rosemead–Temple City city limits near Grand Avenue. Rosemead Boulevard then continues north through Temple City and the unincorporated areas of East San Gabriel and East Pasadena and into the City of Pasadena. (The highway was relinquished to Temple City, and those portions in the unincorporated areas were transferred to Los Angeles County.) In Pasadena, the state still maintains the short portion of Rosemead Boulevard from Interstate 210 to Foothill Boulevard, with SR 164's legal northern terminus at the latter. Rosemead Boulevard continues northwest under Pasadena's control from Foothill Boulevard to Sierra Madre Villa Avenue. Bus service is provided by Metro Local line 266 (between Foothill Boulevard and Del Amo Boulevard) and Long Beach Transit line 111 (south of Del Amo Boulevard) throughout Rosemead Boulevard and Lakewood Boulevard. The Metro C Line is also provided by a station in the median of Interstate 105 under Lakewood Boulevard. History Before the present SR 19 was constructed, San Gabriel Boulevard, which extended from Lamanda Park south to Downey, and was widened and repaved by an assessment tax in 1925, was the main road through the Whittier Narrows, requiring several turns to stay on it and to continue south to Long Beach. The state legislature added Route 168 to the state highway system in 1933, which followed this general alignment between Route 60 (SR 1) in Long Beach and Route 9 (Foothill Boulevard, then US 66) near Lamanda Park. SR 19 was later designated out of the 1964 state highway renumbering. The 9.56-mile (15.39 km) piece of SR 19 north of Gallatin Road in Pico Rivera