Interstate 129 West

Interstate 129 begins westbound along U.S. 20/75 within the exchange at I-29. The route however is not acknowledged until Nebraska.

04/20/07

I-129/U.S. 20-75 cross the Missouri River three miles south of Downtown Sioux City.

06/17/15

The Nebraska state line lies midway across the Sergeant Floyd Memorial Bridge.

06/17/15

A parclo interchange (Exit 2) joins Interstate 129 with Dakota Avenue in the city of South Sioux City in one mile.

06/17/15

The first of two confirming markers for I-129 west stands ahead of the C Avenue overpass.

06/17/15

Dakota Avenue leads north into South Sioux City as U.S. 20 Business. The bannered route is only signed at the south split with U.S. 77.

06/17/15

Exit 2 leaves I-129/U.S. 20-75 west for Dakota Avenue. Dakota Avenue is the historic alignment of U.S. 73/77 between Dakota City and South Sioux City.

06/17/15

U.S. 75 separates with I-129/U.S. 20 west at the forthcoming cloverleaf interchange (Exit 1) with U.S. 77.

06/17/15

I-129/U.S. 20-75 cross over BNSF Railroad lines and an area of wetlands south of Crystal Cove Park and ahead of U.S. 77 at Exits 1 B/A.

06/17/15

Exit 1B departs next from I-129/U.S. 20-75 west for U.S. 77 north into South Sioux City.

06/17/15

U.S. 77 north ends just across the Missouri River at I-29 and U.S. 20 Business (Gordon Drive). Historically it continued west along I-29 to Iowa 12 north.

06/17/15

U.S. 75 combines with U.S. 77, 16 miles south from I-129/U.S. 20 at Exit 1 A to Dakota City, Homer and a roundabout at Winnebago.

06/17/15

The west end shield for Interstate 129 stands beyond the Lake Avenue underpass along U.S. 20.

04/20/07

Milepost zero for I-129 follows this distance sign posted six miles from the village of Jackson and 18 miles southeast of the Dixon County seat of Ponca.

06/17/15