Route 104
Map of Fairfield County in southwestern Connecticut with Route 104 highlighted in red
Route information
Maintained by CTDOT
Length	6.82 mi[1] (10.98 km)
Existed	1935–present
Major junctions
South end	Route 137 in Stamford
Major intersections	Route 15 / Merritt Parkway in Stamford
North end	Long Ridge Road at the New York state line
Location
Country	United States
State	Connecticut
Counties	Fairfield
Highway system
Connecticut State Highway System Interstate US State SSR SR Scenic
← Route 103 → Route 106

Route 104 is a Connecticut state highway in the city of Stamford, starting from the Bulls Head section of the city then through North Stamford, with the highway ending at New York state line.

Route 104 begins at an intersection with Route 137 in the Bulls Head section of Stamford and heads north, passing by GE Capital, then crossing the Rippowam River, up through North Stamford and onto New York state line. About 2.3 miles (3.7 km) north of the river, Route 104 crosses under the Merritt Parkway (Route 15) at exit 34 into the North Stamford section of the city. After another 3.2 miles (5.1 km), Route 104 crosses over the Mianus River, through the Long Ridge section of the city, as it heads towards the New York state line. The route ends in the town of Pound Ridge, New York and continues as Long Ridge Road. Route 104 is known as Long Ridge Road throughout its entire length and is classified as a principal arterial road, carrying traffic volumes of as much as 30,000 vehicles per day, particularly near the Merritt Parkway interchange. Route 104 is four lanes wide from Route 137 to Route 15, and two lanes wide north of Route 15.^[1][2]

In the 1920s, the route from downtown Stamford to the Long Ridge section of the city was a secondary state highway known as Highway 300. It ran from U.S. Route 1 along Bedford Street and Long Ridge Road up to the New York state line. Highway 300 was renumbered as Route 104 in the 1932 state highway renumbering. In 1976, Route 137 was extended south along Washington Boulevard (parallel to Bedford Street) to US 1 and Route 104 was truncated to its current south end at Route 137.^[2]

The entire route is in Stamford, Fairfield County.

mi[1]	km	Destinations	Notes
0.00	0.00	Route 137 (Washington Boulevard) – Railroad Station	Southern terminus
2.27	3.65	Route 15 / Merritt Parkway – New Haven, New York City	Exit 34 on Route 15 / Merritt Parkway
6.82	10.98	Long Ridge Road – Bedford, Pound Ridge	Continuation into New York
1.000 mi = 1.609 km; 1.000 km = 0.621 mi