Interstate 229 - Cliff Avenue Median Crossovers
Project Summary:
This project includes the modification of the median crossovers with a temporary structure in preparation for the 2025 interchange reconstruction. This project also includes the temporary widening of Interstate 229 northbound.
Find information on the project study here: https://www.i229exits3and4.com/
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Text "I229Exit4" to 605-566-4041
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Project Timeline:
July 2024 - December 2024
Project Updates:
Aug. 29, 2024 - Press Release:
Beginning on Tuesday, Sept. 3, 2024, the Interstate 229 (exit 4) northbound on-ramp at Cliff Avenue in Sioux Falls will be closed through Friday, Sept. 20, 2024. Crews will be installing a retaining wall and conducting lane widening operations for the I-229 temporary bridge and diversion.
Motorists should be prepared for delays and use alternate routes during peak travel times through the I-229 and Cliff Avenue construction project. Drivers are urged to use caution and reduce their speed while traveling through the area. Traffic control measures will continue to guide motorists around all closures.
The lane closure previously scheduled to take place on Thursday, Aug. 29, 2024, in the northbound lane at Cliff Avenue between the I-229 (exit 4) northbound on-ramp and southbound off-ramp has been postponed and will not be in effect.
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Aug. 28, 2024 - Press Release:
Beginning Thursday, Aug. 29, 2024, a lane closure will be placed in the northbound lane at Cliff Avenue between the Interstate 229 (exit 4) northbound on-ramp and southbound off-ramp in Sioux Falls. Crews will be installing a retaining wall for the I-229 temporary bridge. Weather dependent, the lane will be reopened on Friday, Sept. 6, 2024.
Motorists should be prepared for delays and use alternate routes during peak travel times through the I-229 and Cliff Avenue construction project. Drivers are urged to use caution and reduce their speed while traveling through the area. Traffic control measures will continue to guide motorists around all closures.
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Aug. 22, 2024:
July 15, 2024 – Aug. 15, 2024, Completed Work: The Interstate 229 crossovers between exits 3, 4, and 5 have been modified by lengthening the existing crossovers. The crossover between exits 3 and 4 was milled and had a new 2” layer of asphalt added. The I-229 inside shoulder northeast of exit 4 was widened by 4’. The I-229 outside shoulder southwest of exit 4 was also widened by 6’. Borrow material was hauled from the I-229 & Louise northbound on-ramp gore area to build the berms and embankments on each side of Cliff Avenue for a temporary bridge.
Anticipated work Aug. 15, 2024 – Sept. 15, 2024: The contractor plans to pave the I-229 northbound on and off ramps and new lanes for the I-229 northbound diversion. The contractor also plans on widening the I-229 outside shoulder northeast of exit 4. Finally, three retaining walls will be installed west(one) and east(two) of Cliff Avenue.
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Aug. 19, 2024 - Press Release:
As of Monday, Aug. 19, 2024, a lane closure is in effect for the outside, southbound lane at Cliff Avenue between the Interstate 229 (exit 4) southbound on-ramp and northbound off-ramp. Crews are installing a retaining wall for the I-229 temporary bridge. Weather dependent, the lane will be reopened Friday, Aug. 23, 2024.
Motorists should be prepared for delays and use alternate routes during peak travel times through the I-229 and Cliff Avenue construction project. Drivers are urged to use caution and reduce their speed while traveling through the area. Traffic control measures will continue to guide motorists around all closures.
Project Photos:
Project Contract Amount:
$5.6 Million
Project Contacts:
Contractor:
Soukup Construction, Inc.
605-332-5282SDDOT: