Milwaukee County Highway BB runs east-west across Southern Milwaukee County.
Junction marker on SB U.S. Rt. 45/WI St Rt 100. Guide marker on SB U.S. Rt. 45/WI St Rt 100. A BGS on SB I-41/U.S. Rt. 41; EB I-94. A BGS on NB I-41/U.S. Rt. 41; WB I-94. A BGS on NB I-41/U.S. Rt. 41; WB I-94.
