Modified Carson Street.

Modified part of Route 66.

Modified Carson Street.

Modified Carson Street.

Added missing section of SR 19.

Modified Carson Street.

Modified Caron Street, Lakewood Boulevard and the Los Alamitos Circle. Also added a small section of Pacific Coast Highway.

Modified Lakewood Boulevard and the Los Alamitos Circle. Also added a small section of Pacific Coast Highway.

Modified Lakewood Boulevard and the Los Alamitos Circle. Also added a small section of Pacific Coast Highway.

Modifying Lakewood Boulevard to be more historically accurate.

Modifying Lakewood Boulevard to be more historically accurate.

Modifying Lakewood Boulevard to be more historically accurate.

Adding the single lane route of Lincoln Avenue, pre-divided highway. Also, changed the date on one section of the four lane. The first four lane section of US 91 west of Present Day I-5 and east of Present Day SR 19 was opened in 1950.

Adding the single lane route of Lincoln Avenue, pre-divided highway. Also, changed the date on one section of the four lane. The first four lane section of US 91 west of Present Day I-5 and east of Present Day SR 19 was opened in 1950.

Adding the single lane route of Lincoln Avenue, pre-divided highway. Also, changed the date on one section of the four lane. The first four lane section of US 91 west of Present Day I-5 and east of Present Day SR 19 was opened in 1950.

Adding the single lane route of Lincoln Avenue, pre-divided highway.

Adding the single lane route of Lincoln Avenue, pre-divided highway.

Adding the single lane route of Lincoln Avenue, pre-divided highway.

Added US 101 Alternate to a section of US 91.

Added a missing date on part of US 91.