Railroad ties typically come in lengths ranging from 8 feet to 9 feet, with 8 feet 6 inches being the most common length used today. Standard sizes are often around 8 feet 6 inches or 9 feet long, 9 inches wide, and 7 inches thick

. Some sources specify a standard length of 8.5 feet (102 inches) as well

. To summarize:

• Common lengths: 8 feet, 8 feet 6 inches (most common), and 9 feet
• Typical dimensions: about 7 inches high, 9 inches wide, and 8.5 to 9 feet long

Longer ties may be used in areas with softer ground for better rail stability

. The exact size can vary based on the railroad's standards and the specific use case.