State Route 546
Map of Whatcom County in northwestern Washington with SR 546 highlighted in red
Route information
Auxiliary route of I-5
Maintained by WSDOT
Length	8.02 mi[1] (12.91 km)
Existed	1964–present
Major junctions
West end	SR 539 near Lynden
East end	SR 9 near Sumas
Location
Country	United States
State	Washington
Counties	Whatcom
Highway system
State highways in Washington Interstate US State Scenic Pre-1964 1964 renumbering Former
← SR 544 → SR 547

SR 546 is a state route in Washington state. It goes from SR 539 near Lynden to SR 9 near Sumas.

Route description

SR 546 begins at SR 539 and proceeds east until it reaches SR 9. The highway is also known as Badger Road. The road connects Lynden to Sumas, and is the WSDOT-designated route from Interstate 5 to the Sumas border crossing.

History

Before 1964, SR 546 was a branch of Secondary State Highway 1B (SSH 1B).

SSH 1B, added to the state highway system in 1937, began at Jct PSH 1 (US 99, now I-5) in Bellingham and ran north via Lynden to the Canadian Border. An east–west branch, starting at a junction with the SSH 1B trunk just north of Lynden and heading east to Jct SSH 1A a few miles SW of Sumas, was added in 1957. This east–west branch had been part of SSH 1A from 1937 to 1953.

The north south route of SSH 1B was posted as Alt US 99 from 1954 to 1969. This route is now SR 539, the east–west branch, SR 546.

Major intersections

The entire highway is in Whatcom County.

Location	mi[1]	km	Destinations	Notes
Lynden	0.00	0.00	SR 539 (Guide Meridian Road) – Bellingham	Western terminus
​	8.02	12.91	SR 9 – Sumas, Arlington, Snohomish	Eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi