I-605: San Gabriel River Freeway

I-605sSan Gabriel River Freeway
Runs from the 405 in Bolsa Chica to the 210 in Duarte

Following the San Gabriel River, sometimes right along its banks, this freeway forms a decent bypass of the central Los Angeles area. It also has the unique aspect of having no real control cities on the mainline. All the signs point to “Thru Traffic” instead of a city. This may have been done as a test, though that test has long since ran its course. The freeway was built between 1964 and 1966. The norther end, from I-10 to I-210 was the last section and was completed in 1971.

Many of the overheads on this freeway have the strange control city of THRU TRAFFIC.
Many of the overheads on this freeway have the strange control city of THRU TRAFFIC.
Just south of Telegraph Rd in Whittier. Fairly clear, as you can see the San Gabriel Mountains in the distance.
Just south of Telegraph Rd in Whittier. Fairly clear, as you can see the San Gabriel Mountains in the distance.
605 north at Imperial Highway. Hwy 42 and Firestone Blvd are covered over here because of the 105 Freeway.
605 north at Imperial Highway. Hwy 42 and Firestone Blvd are covered over here because of the 105 Freeway.
605 approaching the 91. Very simple - no control cities.
605 approaching the 91. Very simple – no control cities.
South end of the 605, heading north.
South end of the 605, heading north.

I-605_south_connectorsVisible signs that the I-605/SR-22/I-405 interchange was built with a southern extension of I-605 in mind. The 405 mainline is in the upper right corner, the 605s to 405s connector coming out of the tunnel, the 22e to 605n/405n connector on the right, and the 405s/605s to 22w connector on the left.

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