I-29 Improvement Project

Closure of northbound I-29 on- and off-ramps at Salix (exit 134)

May 30 - June 13

Ramp shoulder construction work, in conjunction with the Interstate 29 interchange reconstruction project, will require closing northbound I-29 on- and off-ramps at Salix (exit 134) beginning at 8 a.m. Tuesday, May 30, until Tuesday, June 13, weather permitting, according to the Iowa Department of Transportation’s Sioux City construction office.

Motorists will be directed around the northbound I-29 ramp work zone onto a signed detour route using Woodbury County roads D-51 and K-45.

Upon completion of the northbound I-29 ramp construction work, southbound I-29 on- and off-ramps will be closed for approximately two weeks for shoulder construction work. Traffic will be detoured around the work zone using Woodbury County roads D-51 and K-25.


I-29 off-ramp to Nebraska Street (exit 147B) will permenantly close

March 21

The permanent closure of the northbound Interstate 29 off-ramp to Nebraska Street (exit 147B) is scheduled for 8 a.m. Tuesday, March 21, weather permitting, according to the Iowa Department of Transportation’s Sioux City construction office.

Motorists should use the Floyd Boulevard off-ramp (exit 147) and follow the signed detour.


Floyd Boulevard ramp closure

March 22

Ramp construction work, in conjunction with the Interstate 29 reconstruction project, in Sioux City, will require closure of the northbound I-29 Floyd Boulevard on-ramp beginning at 8 a.m. Tuesday, March 22, weather permitting, according to the Iowa Department of Transportation’s District 3 Office in Sioux City.

Traffic will be directed onto a signed detoured around the work zone (see map). Motorists are encouraged to use alternate routes.


Segment 2

Status update

Reconstruction of the I-29 northbound lanes will continue through 2017. Work will include replacement of the bridges over Floyd Boulevard, Pierce Street, Perry Creek, and Hamilton Boulevard as well as construction of two new bridges at Virginia Street and northbound Nebraska Street off-ramp.

Sidewalk closures

Status update

Along Pierce St. from Gordon Dr. to Chris Larsen Park Road.

Riverfront trail from Riverside Boulevard to Hamilton Boulevard (beginning May 15)



Construction Overview



blue line  2017
purple line  2018
orange line  2019

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SC - I-29 @ Bluff (26)