End BL-25/Bus. US-20/Bus. US-26/Bus. US-87 at I-25/US-20/US-26/US-87
End BL-25/Bus. US-20/Bus. US-26/Bus. US-87 at I-25/US-20/US-26/US-87 (Exit 135). Merge right for I-25 north to Casper; left for I-25 south to Cheyenne. This is the south end of the Douglas business loop.