weg in de Verenigde Staten
North
from Watertown, SD to Manvel, ND
jalan di Amerika Serikat
from Joliette, ND to Pembina, ND
amerikansk väg
South
autostrada statunitense
near Salina, KS
Highway in den Vereinigten Staaten
at El Reno, OK
at Fargo, ND
at Fort Worth, TX
at Grand Forks, ND
USA
yes
from Wichita, KS to Salina, KS
US 81 highlighted in red
כביש בארצות הברית
Numbered U.S. Highway in the United States
at York NE
autoroute américaine
/ at Pembina–Emerson Border Crossing near Pembina, ND
at Salem, SD
미국의 일반 국도
Amerika Birleşik Devletleri'de numaralandırılmış otoyol
at Chickasha, OK
U.S. Route 81
81号美国国道