Category:Roads numbered 646

• Signs for roads numbered 646 (1 C, 31 F)

A

• A646 road (England) (13 C, 87 F)

C

• County Route 646 (Atlantic County, New Jersey) (1 C)
• County Route 646 (Cumberland County, New Jersey) (1 C)
• County Route 646 (Essex County, New Jersey) (1 C)
• County Route 646 (Passaic County, New Jersey) (2 C, 3 F)
• County Route 646 (Salem County, New Jersey) (1 C, 2 F)

M

• Maryland Route 646 (1 C, 2 F)

O

• Ohio State Route 646 (4 F)

P

• Pennsylvania Route 646 (19 F)

S

• Strada statale 646 di Uccea (1 F)

V

• Virginia State Route 646 (2 C, 5 F)