State Highway 55
Map of Logan County in northeastern Colorado with SH 55 highlighted in red
Route information
Maintained by CDOT
Length	5.659 mi[1] (9.107 km)
Major junctions
South end	CR 81 near Fleming
Major intersections	I-76 near Crook
North end	US 138 in Crook
Location
Country	United States
State	Colorado
Counties	Logan
Highway system
Colorado State Highway System Interstate US State Scenic
← SH 53 → SH 56

State Highway 55 (SH 55) is a 5.659 mi (9.1 km) long state highway in the U.S. state of Colorado. SH 55's southern terminus is at County Road 81 northeast of Fleming, and the northern terminus is at SH 138 in Crook. It serves as a connector between Crook and Interstate 76 (I-76).

Route description

SH 55 runs 5.7 miles (9.2 km), starting at a junction with U.S. Highway 138 in Crook, then south across the South Platte River to I-76. The highway ends at CR 81 northeast of Fleming.

Major intersections

The entire route is in Logan County.

Location	mi	km	Destinations	Notes
Crook	0.000	0.000	US 138 – Sterling, Julesburg	Northern terminus
​	2.417	3.890	I-76 – Julesburg, Fort Morgan, Omaha, Denver	I-76 exit 149.
​	5.659	9.107	CR 81	Southern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi