Colorado State Highway 45

State Highway 45
Pueblo Boulevard
Map of Pueblo County in south central Colorado with SH 45 highlighted in red
Route information
Maintained by CDOT
Length:	9 mi (15 km)
Existed:	1964 – present
Major junctions
South end:	I-25 in Pueblo
	SH 78 SH 96
North end:	US 50 in Pueblo West
Location
Counties:	Pueblo
Highway system
Colorado State Highways Interstate U.S. State Scenic ← SH 44 SH 46 →

State Highway 45, also known as Pueblo Boulevard, is an expressway in the city of Pueblo. It is 9.126 miles (14.687 km) long. Its southern terminus is at I-25 and its northern terminus is US 50. Plans are waiting to be approved to expand the expressway to six lanes, build a new interchange with US 50, and fix lane narrowing.

The route begins at I-25. It traverses just south of Lake Minnequa and the Minnequa Business District in southern Pueblo. It intersects SH 78 and SH 96. The route then continues, intersecting several other city streets. The road comes to an end at US 50. The street continues northwest as Wildhorse Road in Pueblo West.

The route started as a rural highway in the 1960s, with the first section from I-25 northwest to SH 96 opening by 1966. By 1973, it was extended north to 11th Street, and was completed north to US 50 by 1975.

Because of growing population in Pueblo, especially in the western side around SH 96, an extension of Highway 45 into a major highway in the area has been proposed. In theory, it would be useful to alleviate traffic jams in the area. SH 45 is planned to eventually continue northeast from US 50 to I-25 around Milepost 103.

The entire route is in Pueblo County.