41st Street Diverging Diamond Interchange

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41st Street and Marion Road

41st Street and I-29

41st Street and Terry Avenue

41st Street and Marion Road

41st Street and I-29

41st Street and Terry Avenue

Phase 1 Construction includes installing sanitary sewer lines, water mains, and storm drainage. This work will include grading, temporary gravel/driveway access, concrete paving, other miscellaneous concrete work, and restoration.

Traffic Alerts

September 14 - 27, 2022

41st Street, Marion Road to I-29

  • Crews have started building retaining walls for the southbound I-29 on-ramp and southbound I-29 off-ramp toward 41st Street from I-29. This work is anticipated to last approximately six to eight weeks.
  • Mainline paving from Marion Road through Meadow Avenue has been completed.
  • Sidewalk installation along the northeast corner of 41st Street and Marion Road has been completed.
  • The installation of a sidewalk along 41st Street is in progress.
  • Terry Avenue and Madelyn Avenue are scheduled to be complete by the middle of September.
  • Construction work on Meadow Avenue has been completed.
  • The permanent signal installation at the 41st Street and Marion Road intersection is expected to be completed by the end of September.

Commuter Route Information

  • September 8 – September 19: The intersection at 41st Street and Terry Avenue North will be closed for reconstruction.
  • The outside southbound lane of I-29 remains closed between 41st Street and 57th Street to allow crews to complete storm drainage work. Two southbound lanes remain open. This work is anticipated to be completed by end of September.
  • Two-way traffic on 41st Street between Marion Road and Meadow Avenue remains open while crews work on 41st Street.
    • One lane in each direction will remain open on the south side of 41st Street.
    • Use signalized intersections at Terry Avenue and Marion Road to make left turns.
  • The pedestrian crossing at 41st Street and I-29 is closed through early fall
    • Pedestrian access is open at 26th Street and 49th Street.
  • The outside right turn lane on the southbound Interstate 29 off-ramp onto 41st Street is closed.
  • Intermittent intersection closures on 41st Street at Terry Avenue, Madelyn Avenue, and Meadow Avenue. Closures will alternate so that at least one intersection is open at all times.
  • Please follow the posted signs around the closures.
View the Full Schedule
  • Spring 2022 - Reconstruction of the south side of 41st Street starts at Meadow Avenue and progresses to the west.
  • Spring 2022 - Marion Road will be closed south of 41st Street for one month. The detour uses Sertoma Avenue and 57th Street.
  • Summer 2022 - Reconstruction of the north side of 41st Street starts at Meadow Avenue and progresses to the west.
  • Fall 2022 - Marion Road will be closed north of 41st Street for one month. The detour uses Sertoma Avenue and 26th Street.
  • Time frames are all approximate, subject to change, and weather and schedule permitting.

For the latest on road and weather conditions, road closures, construction work zones, commercial vehicle restrictions, and traffic incidents, visit sd511.org or dial 511.

Marion Road Closures & Detours

2022 Spring to Fall

Marion Road Closure map
  • Spring 2022 - Reconstruction of the south side of 41st Street starts at Meadow Avenue and progresses to the west.
  • Spring 2022 - Marion Road will be closed south of 41st Street for one month. The detour uses Sertoma Avenue and 57th Street.
  • Summer 2022 - Reconstruction of the north side of 41st Street starts at Meadow Avenue and progresses to the west.
  • Fall 2022 - Marion Road will be closed north of 41st Street for one month. The detour uses Sertoma Avenue and 26th Street.
  • Time frames are all approximate, subject to change, and weather and schedule permitting.

While Marion Road is closed, business access will be open along Larch Avenue and 44th Street.

Pedestrian Routes

2022 Summer to Fall

Pedestrian Route Detour map for Summer to Fall 2022

Construction Progress

Construction began in early 2022 and is anticipated to be completed in summer 2024. The project is divided into two phases: west and east. The west half of the project area includes 41st Street from Marion Road to Meadow Avenue. The east half includes 41st Street from Meadow Avenue to Shirley Avenue.

Click or tap on the dots to see more detail about a particular area.

Project overview map ? South Side of 41st Street West of I-29 (2022)

South Side of 41st Street West of I-29 (2022)

Construction is complete on the south side of 41st Street west of I-29.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? Marion Road South of 41st Street (2022)

Marion Road South of 41st Street (2022)

Construction progresses on Marion Road south of 41st Street.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? North Side of 41st Street West of I-29 (2022)

North Side of 41st Street West of I-29 (2022)

Construction is complete on the north side of 41st Street west of I-29.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? Marion Road North of 41st Street (2022)

Marion Road North of 41st Street (2022)

Construction progresses on Marion Road north of 41st Street.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? I-29 Interchange Work (2022-2023)

I-29 Interchange Work (2022-2023)

Construction has not yet begun on the new interchange.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? South Side of 41st Street East of I-29 (2023)

South Side of 41st Street East of I-29 (2023)

Construction has not started on the south side of 41st Street east of I-29.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
? North Side of 41st Street East of I-29 (2023)

North Side of 41st Street East of I-29 (2023)

Construction has not started on the north side of 41st Street east of I-29.

  • Removals

    In Progress
    Completed

  • Sanitary Sewer

    In Progress
    Completed

  • Water Main

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Grading

    In Progress
    Completed

  • Gravel

    In Progress
    Completed

  • Concrete Paving

    In Progress
    Completed

  • Misc Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed

  • April - November 2022

    41st Street construction from Marion Road to Meadow Avenue (west half of project area)

  • April - November 2023

    41st Street construction from Meadow Avenue to Shirley Avenue (east half of project area)

  • April - June 2024

    Finishing touches and clean-up; complete construction