Minnesota Department of Transportation

511 Travel Info

I-35W / Fourth Street ramp construction

Minneapolis

Orange barrels on a highway

Noise walls

The proposed project provides for the construction of an access from 4th Street South to northbound I-35W and the construction of an auxiliary lane on northbound I-35W from University Avenue to the Johnson Street exit, and possible noise walls.

As part of the project development process, the impact of noise needs to be evaluated and mitigation offered, when it is reasonable and feasible.  The Project Team conducted a noise study and concluded that the addition of noise barriers along I-35W would reduce noise for adjacent properties.  MnDOT is required to offer noise abatement (noise walls) if the noise level  exceeds 65 decibels (state standard) or 70 decibels (federal standard). 

Existing I-35W noise levels: 70 to 79 decibels
Modeled I-35W noise levels with the I-35W project and without noise walls: 70 to 79 decibels (0.3 to 0.8 decibels increase)
Reductions from the proposed I-35W noise walls range from: 5 to 15 decibels
Decibel change detectable to people: 5 decibels

Documents

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Neighborhoods

Voting Results (October 2013)

Wall E: West side of Hwy 35W between 4th Street SE and 8th Street SE

  • Total eligible points: 174
  • Yes Points: 9 (5.2 percent)
  • No Points: 95 (54.6 percent)
  • Non Responses: 70 (40.2 percent)
  • Result: Wall will not be built

Wall F: East side of Hwy 35W between 4th Street SE and 8th Street SE

  • Total eligible points: 120
  • Yes Points: 22 (18.3 percent)
  • No Points: 69 (57.5 percent)
  • Non Responses: 29 (24.2 percent)
  • Result: Wall will not be built

Wall G: West side of Hwy 35W between 8th Street SE and CP Railroad Bridge

  • Total eligible points: 28
  • Yes Points: 0 (0 percent)
  • No Points: 16 (57.1 percent)
  • Non Responses: 12 (42.9 percent)
  • Result: Wall will not be built

Wall I: East side of Hwy 35W between CP Railroad Bridge and Talmage Avenue SE

  • Total eligible points: 79
  • Yes Points: 5 (6.3 percent)
  • No Points: 57 (72.2 percent)
  • Non Responses: 17 (21.5 percent)
  • Result: Wall will not be built

Wall K: West side of Hwy 35W between Hennepin Avenue NE and the Summer Street SE Ped Bridge

  • Total eligible points: 133
  • Yes Points: 44 (33.1 percent)
  • No Points: 67 (50.4 percent)
  • Non Responses: 22 (16.5 percent)
  • Result: Wall will not be built

Wall L: West side of Hwy 35W between Broadway Street NE and Johnson Street NE

  • Total eligible points: 108
  • Yes Points: 51 (47.2 percent)
  • No Points: 33 (30.6 percent)
  • Non Responses: 24 (22.2 percent)
  • Result: Wall will be built