The following highways are numbered 811:
| Preceded by 810 | Lists of highways 811 | Succeeded by 812 |
Dixie Highway in Palm Beach and Broward counties carries two segments of the State Road 811 designation by Florida Department of Transportation, as well as the local County Road 811 in southeast Florida. The entire road comprises a section of the Dixie Highway, a National Auto Trail which eventually became a former routing of U.S. Route 1 after the route was shifted east to Federal Highway. One segment of SR 811 is in Broward County and the other is in Palm Beach County, Florida. The segments of SR 811 are supplemented by three shorter segments of CR 811, one of which is unsigned.
County Road 707 (CR 707) is a designation applied to two segments of road across three counties on Florida's Treasure Coast. The entire road was formerly designated State Road 707 (SR 707) and has been gradually transferred to county jurisdiction.
Tertiary Highway 811, commonly referred to as Highway 811, is the longest of Ontario's tertiary highways, and the highest posted route number in the province. The route encounters no named roads along its route, aside from its eastern terminus at Secondary Highway 527. It extends 59 kilometres (37 mi) westward into the wilderness, ending at a bridge over the Weaver River. The route was designated in 1976 with the intention of extending it further west, but this extension has yet to be constructed.
State Road A1A Alternate may refer to all or part of the following roads that had, at one time, this designation by the Florida Department of Transportation but have since been renumbered:
King's Highway 109, or Highway 109, is a former provincial highway in Ontario. It was used on two separate, unrelated routes during the 1950s and 1960s:
Secondary Highway 500, commonly referred to as Highway 500, was a secondary highway in the Canadian province of Ontario which was first designated in 1956. Its route was renumbered in 1964, becoming:
Secondary Highway 514, commonly referred to as Highway 514, was a secondary highway in the Canadian province of Ontario. It was used on two separate routes from the 1950s to the 1990s:
811 may refer to:
