The designation “33B” is used for a limited number of highway routes that serve as auxiliary, spur, or business variants of primary routes numbered 33. These highways are typically maintained by state or provincial transportation agencies. The following entries are documented in reliable sources:
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New York State Route 33B – A 5.68 mi (9.14 km) east–west state highway in Erie County, New York. It runs from an intersection with NY 78 in the village of Hamburg to NY 33 in the town of Amherst, providing a connector between the two primary routes. The route is signed as “33B” and is maintained by the New York State Department of Transportation.
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North Carolina Highway 33 Business (NC 33 B) – A former business loop of NC 33 through the town of Greenville, North Carolina. The designation was decommissioned in the early 2000s, and the roadway is now part of the local street system.
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South Dakota Highway 33B – A short spur off SD 33 serving the community of Huron. The route is unsigned and is recorded only in the South Dakota Department of Transportation’s internal route logs.
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Washington State Route 33B – An unsigned reference route that provides access to a state park near the town of Puyallup. It is listed in the Washington State Department of Transportation’s route inventory but is not signed for public navigation.
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Alberta Highway 33B (former) – A historic designation for a short connector in the province of Alberta, Canada, that linked Highway 33 with the town of St. Albert. The designation was withdrawn in the 1970s following a renumbering of the provincial highway system.
Notes
- The list is not exhaustive; many jurisdictions do not use the “B” suffix for auxiliary routes, and some may have had short-lived designations that are not recorded in publicly available highway logs.
- Where a highway numbered 33B has been decommissioned, the entry reflects its status at the time of the most recent reliable source.
