Portions between I-580 and I-5 are a four-lane freeway, and there are plans to upgrade the portion between I-5 and SR 99 in Modesto to an expressway, with 3 miles (4.8 kilometres) west of SR 99 currently open. Route 132 is a two-lane road important to recreational travelers en route to Modesto Reservoir, Turlock Reservoir, Don Pedro Reservoir and the Sierra Nevada foothills.[2]
Route description
The route begins in San Joaquin County at Interstate 580, heading eastward as a freeway. After an interchange with Interstate 5, the freeway segment ends and continues as a two-lane highway. After passing SR 33 at an interchange, it enters Stanislaus County, where it intersects CR J3. It then heads eastward, then turns north on Dakota Avenue for a short length before turning east onto a two-lane expressway through the city of Modesto, where it intersects SR 99 and SR 108. At the east side of the city, it has a very short concurrency with CR J7 as it exits Modesto and enters Empire. As it exits Empire, it intersects numerous county roads as it exits Stanislaus County and enters Tuolumne County. After several miles, it exits Tuolumne County and enters Mariposa County, California, reaching its east end at SR 49 in Coulterville.
The route was established in 1934 from modern day SR 33 to SR 49; in 1959 it was extended west to I-5, and in 1963 to the present-day western terminus at I-580.[6]
A major accident occurred on March 5, 1983, when a collision involving a patrol car and another car with three Secret Service agents inside occurred, killing all three Secret Service agents. This was due to the unusual curve that the road takes on near the end of its course in Mariposa County, created in order to support the hills of the Sierra Nevada. The patrol car was hired for a visit that Queen Elizabeth II was planning to Yosemite National Park in March 1983.
The city-built "Kansas-Needham Overhead", connecting Kansas Avenue and Needham Street over the Union Pacific Railroad's Fresno Subdivision in Modesto, was aligned for a future connection to a SR 132 expressway west of Modesto.[7] Construction of the first phase of the expressway project began in 2019 and was completed in September 2022. The new alignment starts at the intersection of Maze Boulevard (SR 132) and Dakota Avenue where SR 132 travels north on Dakota for a short distance and then turns east onto a newly-built two-lane expressway to SR 99 and Needham Street, where SR 132 then travels southeast on new one-way auxiliary roadways of 5th and 6th Streets alongside SR 99 (though it is not co-routed) to the interchange of Maze Boulevard, meeting up with SR 108 and SR 132's present day alignment.[8]
Future
A second phase of the SR 132 expressway project west of Modesto is in the proposal stage. It is planned to connect to the recently completed expressway at Dakota Avenue to an approximate location near the intersection of Maze Boulevard (SR 132) and Gates Road / Paradise Road.[9]
Major intersections
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[10] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.
^ abCalifornia Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
^Earth Metrics, Environmental Assessment for Modesto California Paradise Postal Station", U.S. Postal Service, January, 1990
^"Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
^Federal Highway Administration (March 25, 2015). National Highway System: California (North)(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved September 29, 2017. Federal Highway Administration (March 25, 2015). National Highway System: Modesto, CA(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved September 29, 2017.
^Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
^ abCalifornia Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original(XLS file) on June 30, 2015. Retrieved June 30, 2015.
I-580 near Tracy
SR 49 at Coulterville
