I-129 W / US 20 W / US 75 S

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Interstate 129 is a short 3.21-mile long route. It starts from I-29 in Iowa. Heading west, it immediately crosses into Nebraska ending just a few miles later at US Highway 77. I-129 is cosigned with US 20 and US 75 its entire way.

US Highway 20 begins in Boston, MA at Massachusetts Highway 2/Beacon Street via Commonwealth Avenue. It parallels Interstate 90 going across Massachusetts, Albany, NY, and Buffalo, NY. From Cleveland, OH, US 20 parallels I-80/I-90 towards Chicago, IL. It runs just outside the city and heads into Iowa. It goes through northern Nebraska. In Cheyenne, WY, it is duplexed with I-25 for a short while. The road is singed on either side of Yellowstone, but not signed within the park. Near Boise, ID, it meets I-84 and after splitting from the road, it goes through Bend, OR ending in Newport, OR at the Pacific Ocean.

US Highway 75 is a north-south road from Canada to Dallas, TX. From Noyes, MN (closed port of entry to Canada), it goes south through far western Minnesota. It runs through Sioux City, IA and Omaha, NE then into Kansas. US 75 passes through Henryetta, OK and into Texas. It ends at unsigned Interstate 345 in Dallas.