Category:Roads numbered 340

• Signs for roads numbered 340‎ (1 C, 16 F)

A

• A340 Federal Highway (Russia)‎ (1 C, 34 F)
• A340 road (England)‎ (4 C, 7 F)
• Aichi Prefectural Road Route 340‎ (2 F)
• Arkansas Highway 340‎ (5 F)

C

• China National Highway 340‎ (2 F)
• Colorado State Highway 340‎ (1 C, 3 F)
• County Route 340/18 (Jefferson County, West Virginia)‎ (1 F)

I

• Iowa Highway 340‎ (3 F)

J

• Jiangsu Provincial Highway 340‎ (13 F)

M

• Missouri Route 340‎ (2 F)

N

• Nevada State Route 340‎ (2 F)
• New York State Route 340‎ (10 F)
• Newfoundland and Labrador Route 340‎ (4 F)

O

• Ohio State Route 340‎ (8 F)

P

• Pennsylvania Route 340‎ (2 C, 33 F)

R

• Route 340 (Japan)‎ (1 C, 17 F)

S

• South Carolina Highway 340‎ (1 F)
• Strada Statale 340 dir Regina‎ (1 C, 2 F)
• Strada Statale 340 Regina‎ (6 F)

T

• Tennessee State Route 340‎ (2 F)
• Texas State Highway 340‎ (1 F)

U

• U.S. Route 340‎ (8 C, 1 F)