41st Street Diverging Diamond Interchange

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41st Street & I-29 Bridge

41st Street and Marion Road

41st Street and I-29

41st Street & I-29 Bridge

41st Street and Marion Road

41st Street and I-29

Traffic Alerts

7/2/2024

  • All traffic control measures have been removed.
  • Crews have completed painting underneath the bridge, and the I-29 lane closure has been removed.
  • All painting and permanent pavement markings are completed.
  • Crews have finished landscaping in all islands and medians.

Commuter Route Information

  • The interchange is now a fully operational diverging diamond interchange (DDI), with all lanes of traffic open for motorists.
  • Sidewalks and crosswalks across the 41st Street bridge are open for pedestrian use.
  • Motorists are urged to use caution and follow painted traffic guidelines and signals to travel through the interchange.

Construction Progress

Construction began in early 2022 and was completed in summer 2024.

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

Project overview map Completed 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
Completed Marion Road South of 41st Street (2022)

Marion Road South of 41st Street (COMPLETE)

Construction is complete on Marion Road south of 41st Street.

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
Completed Marion Road North of 41st Street (2022)

Marion Road North of 41st Street (COMPLETE)

Construction is complete on Marion Road north of 41st Street.

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

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

Construction is complete 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
Completed North Side of 41st Street East of I-29 (2023)

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

Construction is copmlete 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
Completed Signal and Sidewalk at 38th St.

Signal and Sidewalk at 38th St. (COMPLETE)

Construction at the intersection of 38th Street and Shirley Avenue is complete.

Completed I-29 Interchange Bridge Work (2024)

I-29 Interchange Bridge Work (2024)

Construction is complete on the I-29 bridge and interchange.

  • Removals

    In Progress
    Completed

  • Barrier Walls

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Concrete

    In Progress
    Completed

  • Restoration

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

I-29 Southbound Interchange Work (2022-2023)

Construction is complete on the Southbound I-29 interchange.

  • Removals

    In Progress
    Completed

  • Drainage & Sanitary Improvements

    In Progress
    Completed

  • Retaining Walls

    In Progress
    Completed

  • Winterize

    In Progress
    Completed

  • Removals

    In Progress
    Completed

  • West 41st off Ramp & I-29 West on Ramp

    In Progress
    Completed

  • Drainage & Sanitary Improvements

    In Progress
    Completed

  • East 41st St off Ramp & I-29 East on Ramp

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Medians

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
Completed I-29 Northbound Interchange Work (2023)

I-29 Northbound Interchange Work (2023)

Construction is complete on the Northbound I-29 interchange.

  • Removals

    In Progress
    Completed

  • Drainage & Sanitary Improvements

    In Progress
    Completed

  • Retaining Walls

    In Progress
    Completed

  • East 41st St off Ramp & I-29 East on Ramp

    In Progress
    Completed

  • West 41st St off Ramp & I-29 West on Ramp

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Medians

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
Completed South side of 41st Street, East of I-29 (2024)

South side of 41st Street, East of I-29 (2024)

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

  • Removals

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
Completed North side of 41st Street, West of I-29 (2024)

North side of 41st Street, West of I-29 (2024)

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

  • Removals

    In Progress
    Completed

  • Drainage

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Concrete

    In Progress
    Completed

  • Restoration

    In Progress
    Completed
Completed Carolyn Avenue (2024)

Carolyn Avenue (2024)

Construction is complete on Carolyn Avenue.

  • Retaining Walls

    In Progress
    Completed

  • Electrical

    In Progress
    Completed

  • Paving

    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