Bolivia
total: 60,762 km
paved: 4,314 km (including 11 km of expressways)
unpaved: 56,448 km (2003)
Bosnia and Herzegovina
total: 21,846 km
paved: 11,425 km (4,686 km of interurban roads)
unpaved: 10,421 km (2005)
Botswana
total: 25,233 km
paved: 8,867 km
unpaved: 16,366 km (2003)
Brazil
total: 1,724,929 km
paved: 94,871 km
unpaved: 1,630,058 km (2000)
British Indian Ocean Territory
total: NA
paved: short section of paved road between port and airfield on
Diego Garcia
British Virgin Islands
total: 177 km
paved: 177 km (2002)
Brunei
total: 2,525 km
paved: 2,338 km
unpaved: 187 km (2000)
Bulgaria
total: 102,016 km
paved: 93,855 km (including 328 km of expressways)
unpaved: 8,161 km (2003)
Burkina Faso
total: 12,506 km
paved: 2,001 km
unpaved: 10,505 km (1999)
Burma
total: 27,000 km
paved: 3,200 km
unpaved: 23,800 km (2005)