Farm to Market Road 1604 (
FM 1604) is located in
Hill County. It was designated on November 7, 1980, on its current route as a renumbering of the
FM 308 spur connection in
Irene. FM 1604 begins at an intersection with 2nd Street in Irene. The highway travels north along 3rd Street, intersecting 1st Street near the old town square. FM 1604 continues to travel north then makes a sharp turn to the west before ending at an intersection with FM 308.
FM 1604 (1951) FM 1604 was first designated on January 30, 1951. The highway ran north from
FM 1153 near
Seymour northward to a point in Baylor County. FM 1604 was cancelled on January 14, 1957, and transferred to
RM 1919.
FM 1604 (1957) FM 1604 was designated again on November 20, 1956, running east from
US 87 (now concurrent with
I-10) to
US 281 at a distance of approximately . On December 19, 1958, FM 1604 was extended to
US 90. On August 7, 1959, the highway was extended another when it absorbed Loop 334 from US 87 to
FM 2173 (now Macdona Lacoste Road) in
Macdona. FM 1604 was extended to the
San Antonio River on May 3, 1963. On August 23, 1964,
FM 1627 (which went from I-35 to SH 218) became part of FM 1604 because the sections from US 281 to I-35 and from SH 218 to US 90 opened. The highway was extended from the San Antonio River to I-10 east of
San Antonio on May 7, 1969, completing the loop around San Antonio at a distance of approximately . On August 23, 1973, the section of
FM 1518 from SH 16 to FM 2173 was redesignated and officially signed as FM 1604. On September 4, 1973, most of FM 2173, which went from Kinney Road south of Macdona to FM 1518, was redesignated and officially signed as FM 1604. The rest of FM 2173 was given to the city of Somerset. On June 30, 1977, FM 1604 was cancelled and redesignated as
Loop 1604 as the section from US 90 south to FM 1518 opened, creating a full loop, replacing the section of FM 1518 from SH 16 to the current junction with Loop 1604. ==FM 1605==