Route 66 crossed the Colorado River on this graceful bridge, built in 1916, & the first to carry auto traffic over the river in the area. The bridge - painted white - now carries a gas pipeline. There is a parking area at the foot of the bridge, on the Arizona side, which affords a close look. The Colorado River Basin, like an emerald strand, winds through the desert, between low, jagged ranges, are home to dense, lush thickets of willows, tamarisks, cottonwoods, & reeds, providing a valuable habitat for many species. The Colorado River is an important migratory flyway for two great deserts "interface" here: the Sonoran & the Mohave. The "Needles," viewed from Topock, Arizona (Alt. 510 ft.) - facing South, across a bend in the Colorado River, this cluster of volcanic spires represents magma that cooled & hardened in the conduits of now-eroded volcanoes. Long an important landmark, for indigenous peoples, & more recent surveyors & travellers. Needles, California was named for this jagged range. The 1940 film "The Grapes of Wrath" shows autos crossing this bridge, with the needles looming on the Horizon. This is a low, hot desert range, within the Basin & Range Province, which encompasses much of the arid southwestern U.S. & most of Mexico. Back of card: Route 66 was certified in 1926 when the nation adopted a numbered system of cross-country, inter-state roads. Fully paved by 1936, Route 66 became an important - & legendary - highway, "immortalized" in literature, music, & on television. Gradually "replaced" by huge, homogeneous "interstates," 66 was decertified in 1985, ceasing to exist "officially." But well over 80% of the old road is still driveable - so, travel back in time, & leave the stress behind - on the interstates…and then, you tool will say: "I still get my kicks, on old route 66!" Small is beautiful - old is beautiful - slow is beautiful - safe is beautiful!