I-229/26th Street, Southeastern Avenue Reconstruction Projects

I-229/26th/Southeastern Projects

Update: 7/18/2019 

I-229 northbound off-ramp traffic has been switched to the new ramp pavement.

Construction Actives:

  • Retaining walls work is starting along Southeastern Avenue.
  • East side ramp paving will now switch to the east lanes after the new west lanes have been opened to traffic.
  • Storm sewer work along Southeastern Avenue has started.
  • Sanitary sewer and water line installations in Southeastern Avenue are complete.
  • Curb and gutter and paving for realigned Yeager Road has started.
  • Pedestrian tunnel for bike trail traffic is in use.
  • West side ramp concrete island and median work continues.
  • Traffic control for Phase 1 construction is in place.

2019 Project Milestones

  1. March 25, 2019 - Begin construction, closing southern lanes of 26th Street
  2. May 2, 2019 - Close Southeastern Ave south of 26th St
  3. March 28, 2019 - Begin demolition of bridges over I-229 and Big Sioux River
  4. April, 2019 - Close Yeager Road
  5. October 2019 - Complete bridges over I-229 and Big Sioux River/BNSF
  6. November 2019 - Phase 1A/B completed

Commuter Route Information

  • 26th Street remains 1 lane in each direction from Yeager Road to Southeastern Avenue.
  • 26th Street traffic is shifted to north side temporary pavement at Frederick Drive.
  • Yeager Road and west I-229 ramps are closed.
  • Southeastern Avenue from 26th Street to Klondike Trail is closed.
  • Detour routes will include: Cliff Ave, 57th St, and Sycamore Ave. View Map


March 6: Public Open House

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Project Overview

Project Bid: $37,304,851.51

Contractor: D & G Construction Inc

26th Street and Interstate 229, including the Southeastern Avenue intersection, will be reconstructed beginning in 2019. The project will be a two-year project and is jointly funded by the South Dakota Department of Transportation and the City of Sioux Falls. The project area is experiencing high crashes, long driver delays, and has outdated geometrics. The project will add a railroad overpass, add turn lanes at Southeastern Avenue and 26th Street and also 26th Street and Interstate 229 to improve travel times and safety through the area. The project will also improve pedestrian movements across the interstate. 26th Street will remain open throughout the project.