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Richardson Hwy Milepost 206-235 Reconstruction & Bridges

    Project No. NFHWY000278/0714024

Richardson Highway Milepost 206-235 Reconstruction & Bridges vicinity map.

The Alaska Department of Transportation & Public Facilities (ADOT&PF), in cooperation with the Alaska Division of the Federal Highway Administration (FHWA), proposes to reconstruct the Richardson Highway from MP 206 to 235 and replace or repair bridges as needed.

Project Scope

This project will reconstruct the Richardson Highway from MP 206 to MP 235 including:

Castner North
  • Road widening, including embankment reconstruction and re-paving,
  • Realigning portions of the road to meet current geometric design standards and facilitate bridge construction,
  • Replacing and/or rehabilitating bridges and large culverts between MP 206 and 235,
  • Upgrading drainage including construction of new ditches, dikes, and culverts as needed,
  • Rockfall mitigation as needed,
  • Modifications to Phelan Creek, including diking and roadway grade raise to mitigate icing and stream encroachment.

Project Purpose

Upgrade the Richardson Highway between MP 206 to MP 235 to reduce maintenance costs and enhance safety.

Castner West

Project Need

The Richardson Highway in the project area has existing identified safety and operational deficiencies. Pavement data indicates that the pavement is nearing the end of its useful life. Structurally deficient bridges within the project include: Upper Miller Creek (0581), Lower Miller Creek (0582), Castner Creek (0583), and Bear Creek (0593). Other bridges and stream crossings exhibit scour and sedimentation. Phelan Creek causes erosion and aufeis on the Richardson Highway. Rainbow Ridge causes occasional rock falls. At MP 225, the Richardson Highway experiences occasional mudslides.

Project Status

The Department is currently working on preliminary design in support of the environmental document.

Projected Project Schedule

project schedule

Public Involvement

If you have questions or information you would like to share about the project area and proposed improvements, please let us know by contacting the emailProject Manager. Project documents will be posted as they become available.