Interstate 29 North - Onawa to Sioux City

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The third rest area along Interstate 29 northbound is one mile beyond the 260th Street overpass in Franklin township.
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The Onawa Rest Area lies adjacent to Guard Lake.
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Iowa 175 represents the next crossing of the Missouri River from I-29 north. The state highway connects with N-51 at Decatur, Nebraska.
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West from Exit 112, Iowa 175 leads toward Lewis and Clark State Park and Omaha Indian Reservation via N-51.
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Iowa 175 travels east from nearby Onawa to Castana, Ida Grove and U.S. 63 south of Waterloo.
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County Route E24 meets Interstate 29 west of the rural city of Whiting in one mile.
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Construction from 2012 to 2019 rebuilt Interstate 29 from south of Sergeant Bluff to the Big Sioux River at the South Dakota State line.
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Work on the South Corridor in Sioux City widened the freeway to six overall lanes and upgraded the interchanges at Singing Hills Boulevard (U.S. 75 Business) and I-129/U.S. 20-75.
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U.S. 75 formerly branched away from I-29 along Singing Hills Boulevard east from Exit 143 to connect with Lewis Boulevard north into Sioux City. U.S. 75 was eventually realigned onto a freeway bypass with U.S. 20 to the east.
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A diamond interchange (Exit 143) joins Interstate 29 with U.S. 75 Business north, Singing Hills Boulevard east and S Patton Street. U.S. 75 Business (Iowa 376) parallels I-29 northward to U.S. 20 Business (Gordon Drive) east of Downtown Sioux City.
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Interstate 29 advances north to a directional cloverleaf interchange (Exit 144) with I-129 west and U.S. 20/75.
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U.S. 20 east and U.S. 75 north overlap 4.2 miles northeast from I-29/129. U.S. 20 branches east along an expressway from there to Lawton, Correctionville and Fort Dodge.
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U.S. 75 remains north along the Sioux City freeway bypass to Plymouth County en route to Le Mars and Orange City. I-129 overlays the freeway along U.S. 20 west across the Missouri River into South Sioux City, Nebraska.
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Exit 144 B loops onto Interstate 129/U.S. 20 west and U.S. 75 south across the Sergent Floyd Memorial Bridge. I-129 spurs 3.1 miles west to a cloverleaf interchange with U.S. 77 north to South Sioux City and U.S. 75/77 south to Dakota City.
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Interstate 29 straddles the east banks of the Missouri River parallel to a UP Railroad line. Lewis Boulevard (U.S. 75 Business) runs along the bluffs just to the east.
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Progressing north, Interstate 29 passes by the Sergeant Floyd Monument.
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Downtown Sioux City spreads along the northern horizon beyond the BNSF Railroad bridge spanning the Missouri River east from South Sioux City, Nebraska.
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Curving northwest along the course of the Missouri River, I-29 continues one mile to a split diamond interchange (Exit 147 A) with Floyd Boulevard and Virginia Street.
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A Warren through truss bridge, the BNSF Sioux City Bridge was built in 1982.¹
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I-29 spans the Floyd River at Exit 147 A. Dace Avenue and U.S. 20 Business (Gordon Drive) cross the river nearby.
Floyd Boulevard and Virginia Street both head north to Historic 4th Street and residential areas northeast of Downtown Sioux City.
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U.S. 20 Business (Gordon Drive) runs along the north side of I-29 to U.S. 77 at Wesley Parkway / Exit 148. Nebraska Street heads north into the Sioux City central business district.
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The I-29 Improvement Project further reconfigured the ramp system along I-29 at Floyd Boulevard and Pierce Street with a new northbound exit ramp added to U.S. 20 Business (Gordon Drive) at Nebraska Street.
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Tyson Events Center lies just north of Interstate 29 at Gordon Drive (U.S. 20 Business) and Pierce Street.
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Separate interchanges with U.S. 77/U.S. 20 Business (Wesley Parkway) and Hamilton Boulevard were connected with a new frontage road and ramp system during Segment 2 construction of the I-29 Improvement Project. Exit 148 marks the north end of U.S. 77.
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Previously a three level interchange linked I-29 with U.S. 20 Business, U.S. 77 south and Wesley Parkway north into Downtown Sioux City. With the conversion into a split diamond interchange, the upper level was removed.
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U.S. 77 and U.S. 20 Business combine southward across the Missouri River into South Sioux City, Nebraska. Five blocks south beyond the Siouxland Veterans Memorial Bridge, the two separate with U.S. 77 shifting onto an arterial bypass to I-129/U.S. 20-75.
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Exit 149 was reconfigured into a slip ramp from I-29 north onto the service road for Hamilton Boulevard.
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Hamilton Boulevard stems north from Larsen Park Road and I-29 to northern reaches of the city. Exit 149 was originally a compact trumpet interchange.
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Continuing westward, Interstate 29 navigates along a narrow strip of land between the Missouri and Big Sioux Rivers and a BNSF (DAIR) Railroad line.
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Iowa 12 branches north from Interstate 29 at a diamond interchange (Exit 151) with Riverside Boulevard.
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Segment 3 construction in the I-29 Improvement Project reconfigured Exit 151 from a trumpet interchange. Iowa 12 runs north to Stone State Park and Westfield.
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Curving northwest from Iowa 12, I-29 meets Two Rivers Drive at a parclo interchange (Exit 1) in a half mile.
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Interstate 29 narrows to four lanes ahead of the Big Sioux River and South Dakota state line. This confirming marker was removed during reconstruction of I-29.
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The Russell E. Christiansen River carrying Interstate 29 northbound across the Big Sioux River was built in 1963.
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