Colorado State Highway 88

SH 88 is a 21.7 mile (34.9 km) long highway, starting at a cloverleaf intersection at Colfax Avenue (U.S. Route 40) and Federal Boulevard in Denver. It starts as a six lane highway going south with a 35 mph speed limit. It then interchanges with the 6th Avenue Freeway (US 6) before passing through the west Denver neighborhoods. Continuing south, it interchanges at US 285's final exit as a freeway entering Sheridan. It then turns east on Belleview with three lanes in each direction and a 40 mph speed limit. It passes under US 85 and goes through another neighborhood with two lanes in each direction approaching Greenwood Village. The route enters the Denver Tech Center and becomes concurrent with Interstate 25 from exit 199 to exit 197 at Arapahoe Road. SH-88 continues east with a 40 mph speed limit on Arapahoe Road with three lanes in each direction passing through Centennial and north of Centennial Airport with a 55 mph speed limit until it reaches its eastern terminus at Parker Road (State Highway 83) in Foxfield.

SH 88 was an original 1920's highway that originally ran along Belleview from Broadway to Parker Road in Greenwood Village. In 1939, it was extended east along Quincy Avenue into the now defunct Lowry Field Bombing Range until 1954. The western extension to Santa Fe (US 85) was completed by 1956.