State Route 49 (SR 49) is a north–south state highway in the U.S. state of California that passes through many historic mining communities of the 1849 California gold rush and it is known as the Golden Chain Highway. The highway's creation was lobbied by the Mother Lode Highway Association, a group of locals and historians seeking a single highway to connect many relevant locations along the Gold Rush to honor the 49ers. One of the bridges along SR 49 is named for the leader of the association, Archie Stevenot.
The roadway begins at Oakhurst, Madera County, in the Sierra Nevada, where it diverges from State Route 41. It continues in a generally northwest direction, weaving through the communities of Goldside and Ahwahnee, before crossing into Mariposa County. State Route 49 then continues northward through the counties of Tuolumne, Calaveras, Amador, El Dorado, Placer, Nevada, Yuba, Sierra, and Plumas, where it reaches its northern terminus at State Route 70, in Vinton.
Route description
SR 49 starts at an intersection with SR 41 near Oakhurst. The road heads west before turning north before the town of Ahwahnee near the Wassama Roundhouse State Historic Park. SR 49 continues north, passing through Nipinnswassee before entering Mariposa County and the Sierra National Forest. Continuing to the west, SR 49 passes through Mormon Bar before running concurrently with SR 140 briefly through the town of Mariposa. Near the town of Mount Bullion, SR 49 passes by Mariposa-Yosemite Airport before turning northwest and going through Bear Valley and the intersection with CR J16. The highway passes by the southern edge of Lake McClure and intersects SR 132 in Coulterville before passing into Tuolumne County.
SR 49 continues north through the town of Moccasin, where SR 120 runs concurrently for several miles to the town of Chinese Camp. SR 49 then turns northeast and runs concurrently with SR 108, intersecting CR E5, into the city of Sonora. SR 49 splits from SR 108 and enters downtown Sonora as Stockton Street, turning north onto Washington Street before leaving the Sonora city limits. SR 49 intersects the north end of CR E5 before passing through Tuttletown and crossing into Calaveras County at the bridge over the Stanislaus River.
SR 49 then enters Carson Hill. Passing by New Melones Lake, SR 49 briefly runs concurrently with SR 4 in the city of Angels Camp.
SR 49 continues through Altaville. The highway continues into San Andreas, where SR 12 terminates. SR 49 continues into Mokelumne Hill, where it intersects with SR 26.
SR 49 then passes through Big Bar and across the Mokelumne River, which is located on the county line between Amador County and Calaveras County. SR 49 then runs concurrently with SR 88 briefly through the town of Martell before intersecting the eastern terminus of SR 104. SR 49 then runs west of Sutter Creek and Amador City, via a bypass around those two cities that was constructed in 2009,) before reaching Drytown.
SR 49 then intersects the eastern end of SR 16 before passing through the city of Plymouth. The highway continues through Enterprise before crossing into El Dorado County and passing through the towns of Nashville, El Dorado, and Diamond Springs (the latter two as Pleasant Valley Road) before entering Placerville. SR 49 traverses downtown on Pacific Street and Main Street before continuing onto Spring Street, where it intersects the US 50 expressway at-grade before continuing north as Georgetown Road.
As it leaves the Placerville city limits, SR 49 intersects the southern terminus of SR 193 before continuing northwest as Coloma Road into the town of Coloma. In Coloma, the highway intersects with SR 153, a spur route to the Marshall Gold Discovery State Historic Park. SR 49 then continues through Lotus before turning north at Pilot Hill and intersecting the northern terminus of SR 193 at Cool. SR 49 continues through the Auburn State Recreation Area before crossing into Placer County and entering the city of Auburn as High Street for a very short distance before turning west on Elm Avenue. SR 49 continues onto I-80 west at an interchange for a very short distance until the interchange at exit 119B where SR 49 departs from I-80. SR 49 then continues almost due north out of the Auburn city limits.