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Project Overview

Project Needs

Project Objectives

Safety icon depicting vehicle accident

1. Safety

Increase safety and decrease the likelihood of fatal and major injury crashes within the project corridor.

Roadway Deficencies depicting uneven road

2. Roadway

Extend the service life of the bridges and culverts throughout the project corridor.

Address existing roadway deficiencies and aging bridges to provide for improved operation of and reduced maintenance costs for the roadway facilities.

Congestion icon depicting traffic jam.

3. Congestion

Reduce unacceptable congestion and improve mobility in the design year for users traveling on the Seward Highway between mileposts 75 and 90.

Project Background

DOT&PF considered a number of alternatives and design options early in the project development process. They key factors to consider were improving safety, correcting roadway deficiencies, and reducing congestion especially during peak travel times. DOT&PF oversaw a number of engineering and environmental studies to help further analyze the alternatives. Through that analysis, improvement alternatives were studied, then advanced or dismissed for a variety of reasons including cost, topographical constraints, and environmental concerns.


Key Design Elements

This project will improve safety and extend the service life of the highway.  Some of the key elements of the proposed plan to improve the roadway include:

  • Resurfacing the roadway in the entire 15-mile corridor
  • Straightening curves to improve sight distances
  • Improving the Portage Glacier Road intersection
  • Replacing  existing bridges (8 total)
  • Adding 5 miles of new passing lanes
  • Adding new parking areas/improving access for the hooligan fishery
  • Enhancing recreational access at Placer River and Portage Creek
  • Improving drainage
  • Replacing guardrails and culverts as needed


Other projects in the area include a U.S. Forest Service a separated multi-use pathway between MP 75 to 82. This pathway project is funded by a grant secured by Chugach National Forest, and will be constructed separately. The Seward Highway MP 75-90 Project Team is coordinating with the U.S. Forest Service on the project.

Did you know?

  • The Seward Highway was completed in 1951, and portions of it, including this project area, were significantly damaged in the 1964 earthquake.

  • The highway is designated as an All -American Road and a National Scenic Byway by the FHWA, and as an Alaska State Scenic Byway by the DOT&PF.

  • In 2006, Seward Highway MP 90-117.5 became the state's first designated Safety Corridor. In 2007, the corridor was extended to MP 87.