State Route 69T or
State Route 69 Temporary (SR 69T) was a long temporary state route in the
Phoenix metropolitan area of Arizona. SR 69T was originally designated on January 10, 1955, running from McDowell Road and Grand Avenue (
US 60,
US 70 and
US 89) south on 19th Avenue past a junction with
US 80 at Buckeye Road, then proceeding east on Baseline Road to
SR 87 and
SR 93 at Country Club Drive in
Mesa. The primary purpose for the existence of SR 69T was to serve as a detour and temporary corridor for future
I-17 and
I-10 traffic between Grand Avenue and Baseline Road, while both Interstates were under construction. In 1957, the Black Canyon Freeway, a section of I-17 that had previously run from Durango Street to McDowell Road, was extended north along SR 69 on 23rd Avenue to a new interchange with Grand Avenue. Following the opening of I-17 between Grand Avenue and McDowell Road, SR 69T was truncated south to end at US 80 (Buckeye Road) on June 17, 1957. On March 12, 1963, SR 69T was further truncated in the west from US 80 to 16th Street and Baseline Road, then extended north along 16th Street to connect with I-10 at 16th Street. The newly constructed section of I-10 from I-17 at Durango Street to 16th Street, known as the Maricopa Freeway, effectively replaced the need for SR 69T between US 80 and 16th Street. By 1965, construction had begun on I-10 east of 16th Street towards Baseline Road. I-10 was completed between 16th Street and Baseline Road with the opening of the Broadway Curve in 1968. In 1976, SR 69T was truncated to its final western terminus at Price Road and Baseline Road. The remainder of SR 69T was decommissioned from Price Road to SR 87/SR 93 on August 13, 1979. ;Major intersections ==State Route 74 (1927-1931)==