State Highway Loop 1604 | ||||
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Anderson Loop | ||||
Route information | ||||
Length: | 94.387 mi (151.901 km) | |||
Existed: | 1977 – present | |||
Major junctions | ||||
CCW end: | I-10 east of San Antonio | |||
I-10 - US 90 I-37 - I-35 US 87 - US 281 SH 151 - US 181 SH 16 |
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CW end: | I-10 east of San Antonio | |||
Highway system | ||||
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Loop 1604, also known as the Charles W. Anderson Loop, is a highway loop that encircles San Antonio, Texas, spanning approximately 95.6 miles (153.9 km). Loop 1604 began as a two-lane highway; it has been upgraded to a four-lane freeway along its northern stretches. The Texas Department of Transportation (TxDOT) is planning to add new lanes between SH 151 and I-10 East as toll lanes. An environmental impact statement study is currently underway to determine other improvements. Loop 1604 is named for former Bexar County Judge Charles W. Anderson, who died from cancer in 1964 after serving for 25 years on the bench.
Loop 1604 was designated in 1977 after FM 1604 was combined with a large portion of FM 1518 to complete a larger loop around San Antonio. Three bypasses were completed in the early 1980s: in 1980, FM 1937 was extended to replace a bypassed portion near Losoya; in 1981, FM 327 was designated as the through route when Loop 1604 was rerouted around Elmendorf; and in 1984 Loop 1604 was routed around Lone Oak, creating FM 3465 over the previous routing.
Loop 1604 forms a complete loop around the city of San Antonio and is the outer of two loops around the city with I-410 being the inner loop. The route has portions that are built to freeway standards, portions built as a divided highway, and portions that are just a two-lane rural road. As with I-410, the city's inner loop, the northern half is more urbanized and the southern half, for the most part, remains rural.